Merge branch '8-4-stable' into ci/api-triggers

* 8-4-stable: (280 commits)
  Add Changelog entry for build traces data integrity fix
  Update doc_styleguide.md [ci skip]
  Added hint that you can search users by name, username, or email.
  Add changelog
  Version 8.4.0.rc1
  Randomize metrics sample intervals
  Make the metrics sampler interval configurable
  Don't automatically require awesome_print
  Disable colorization if STDOUT is not a tty
  Block the reported user before destroying the record
  changes `$quote-gray` to `$secondary-text`
  makes message plural for multiple MRs and removes from loop. Duh.
  Prepare Installation and Update docs for 8.4 RC1
  Mention channel/key bug in irkerd docs
  Revert "Remove the `:coffee` and `:coffeescript` Haml filters"
  gets merge request discussion working again
  adds back in discussion.haml.html for issues commenting and closing/reopening properly.
  removing last chunk of MR ajax changes, rest will be in another MR
  reverting more MR ajax files, will appear in different commit
  reverting MR ajax changes, which will be in a different MR
  ...

45 files changed, 598 insertions, 246 deletions

diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 1108277aabf..00c933237fe 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -71,6 +71,7 @@ module API
       expose :avatar_url
       expose :star_count, :forks_count
       expose :open_issues_count, if: lambda { |project, options| project.issues_enabled? && project.default_issues_tracker? }
+      expose :runners_token, if: lambda { |_project, options| options[:user_can_admin_project] }
     end
 
     class ProjectMember < UserBasic
diff --git a/lib/api/merge_requests.rb b/lib/api/merge_requests.rb
index 3c1c6bda260..5c97fe1c88c 100644
--- a/lib/api/merge_requests.rb
+++ b/lib/api/merge_requests.rb
@@ -211,7 +211,7 @@ module API
         unauthorized! unless merge_request.can_be_merged_by?(current_user)
         not_allowed! if !merge_request.open? || merge_request.work_in_progress?
 
-        merge_request.check_if_can_be_merged if merge_request.unchecked?
+        merge_request.check_if_can_be_merged
 
         render_api_error!('Branch cannot be merged', 406) unless merge_request.can_be_merged?
 
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index a9e0960872a..71bb342f844 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -3,7 +3,7 @@ module API
   class Projects < Grape::API
     before { authenticate! }
 
-    resource :projects do
+    resource :projects, requirements: { id: /[^\/]+/ } do
       helpers do
         def map_public_to_visibility_level(attrs)
           publik = attrs.delete(:public)
@@ -69,7 +69,8 @@ module API
       # Example Request:
       #   GET /projects/:id
       get ":id" do
-        present user_project, with: Entities::ProjectWithAccess, user: current_user
+        present user_project, with: Entities::ProjectWithAccess, user: current_user,
+                              user_can_admin_project: can?(current_user, :admin_project, user_project)
       end
 
       # Get events for a single project
@@ -118,7 +119,8 @@ module API
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(current_user, attrs).execute
         if @project.saved?
-          present @project, with: Entities::Project
+          present @project, with: Entities::Project,
+                            user_can_admin_project: can?(current_user, :admin_project, @project)
         else
           if @project.errors[:limit_reached].present?
             error!(@project.errors[:limit_reached], 403)
@@ -163,7 +165,8 @@ module API
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(user, attrs).execute
         if @project.saved?
-          present @project, with: Entities::Project
+          present @project, with: Entities::Project,
+                            user_can_admin_project: can?(current_user, :admin_project, @project)
         else
           render_validation_error!(@project)
         end
@@ -182,8 +185,9 @@ module API
         if @forked_project.errors.any?
           conflict!(@forked_project.errors.messages)
         else
-          present @forked_project, with: Entities::Project
-        end
+          present @forked_project, with: Entities::Project,
+                                   user_can_admin_project: can?(current_user, :admin_project, @forked_project)
+         end
       end
 
       # Update an existing project
@@ -229,7 +233,8 @@ module API
         if user_project.errors.any?
           render_validation_error!(user_project)
         else
-          present user_project, with: Entities::Project
+          present user_project, with: Entities::Project,
+                                user_can_admin_project: can?(current_user, :admin_project, user_project)
         end
       end
 
@@ -269,7 +274,7 @@ module API
       # Remove a forked_from relationship
       #
       # Parameters:
-      # id: (required) - The ID of the project being marked as a fork
+      #   id: (required) - The ID of the project being marked as a fork
       # Example Request:
       #  DELETE /projects/:id/fork
       delete ":id/fork" do
@@ -278,6 +283,16 @@ module API
           user_project.forked_project_link.destroy
         end
       end
+
+      # Upload a file
+      #
+      # Parameters:
+      #   id: (required) - The ID of the project
+      #   file: (required) - The file to be uploaded
+      post ":id/uploads" do
+        ::Projects::UploadService.new(user_project, params[:file]).execute
+      end
+
       # search for projects current_user has access to
       #
       # Parameters:
diff --git a/lib/api/tags.rb b/lib/api/tags.rb
index 47621f443e6..2d8a9e51bb9 100644
--- a/lib/api/tags.rb
+++ b/lib/api/tags.rb
@@ -40,6 +40,27 @@ module API
         end
       end
 
+      # Delete tag
+      #
+      # Parameters:
+      #   id (required) - The ID of a project
+      #   tag_name (required) - The name of the tag
+      # Example Request:
+      #   DELETE /projects/:id/repository/tags/:tag
+      delete ":id/repository/tags/:tag_name", requirements: { tag_name: /.*/ } do
+        authorize_push_project
+        result = DeleteTagService.new(user_project, current_user).
+          execute(params[:tag_name])
+
+        if result[:status] == :success
+          {
+            tag_name: params[:tag_name]
+          }
+        else
+          render_api_error!(result[:message], result[:return_code])
+        end
+      end
+
       # Add release notes to tag
       #
       # Parameters:
diff --git a/lib/api/users.rb b/lib/api/users.rb
index 3400f0713ef..0d7813428e2 100644
--- a/lib/api/users.rb
+++ b/lib/api/users.rb
@@ -39,7 +39,7 @@ module API
         if current_user.is_admin?
           present @user, with: Entities::UserFull
         else
-          present @user, with: Entities::UserBasic
+          present @user, with: Entities::User
         end
       end
 
diff --git a/lib/banzai/filter/abstract_reference_filter.rb b/lib/banzai/filter/abstract_reference_filter.rb
index 63ad8910c0f..b2db10e6864 100644
--- a/lib/banzai/filter/abstract_reference_filter.rb
+++ b/lib/banzai/filter/abstract_reference_filter.rb
@@ -47,7 +47,17 @@ module Banzai
         { object_sym => LazyReference.new(object_class, node.attr(data_reference)) }
       end
 
-      delegate :object_class, :object_sym, :references_in, to: :class
+      def object_class
+        self.class.object_class
+      end
+
+      def object_sym
+        self.class.object_sym
+      end
+
+      def references_in(*args, &block)
+        self.class.references_in(*args, &block)
+      end
 
       def find_object(project, id)
         # Implement in child class
@@ -60,27 +70,31 @@ module Banzai
       end
 
       def call
-        # `#123`
-        replace_text_nodes_matching(object_class.reference_pattern) do |content|
-          object_link_filter(content, object_class.reference_pattern)
-        end
+        if object_class.reference_pattern
+          # `#123`
+          replace_text_nodes_matching(object_class.reference_pattern) do |content|
+            object_link_filter(content, object_class.reference_pattern)
+          end
 
-        # `[Issue](#123)`, which is turned into
-        # `<a href="#123">Issue</a>`
-        replace_link_nodes_with_href(object_class.reference_pattern) do |link, text|
-          object_link_filter(link, object_class.reference_pattern, link_text: text)
+          # `[Issue](#123)`, which is turned into
+          # `<a href="#123">Issue</a>`
+          replace_link_nodes_with_href(object_class.reference_pattern) do |link, text|
+            object_link_filter(link, object_class.reference_pattern, link_text: text)
+          end
         end
 
-        # `http://gitlab.example.com/namespace/project/issues/123`, which is turned into
-        # `<a href="http://gitlab.example.com/namespace/project/issues/123">http://gitlab.example.com/namespace/project/issues/123</a>`
-        replace_link_nodes_with_text(object_class.link_reference_pattern) do |text|
-          object_link_filter(text, object_class.link_reference_pattern)
-        end
+        if object_class.link_reference_pattern
+          # `http://gitlab.example.com/namespace/project/issues/123`, which is turned into
+          # `<a href="http://gitlab.example.com/namespace/project/issues/123">http://gitlab.example.com/namespace/project/issues/123</a>`
+          replace_link_nodes_with_text(object_class.link_reference_pattern) do |text|
+            object_link_filter(text, object_class.link_reference_pattern)
+          end
 
-        # `[Issue](http://gitlab.example.com/namespace/project/issues/123)`, which is turned into
-        # `<a href="http://gitlab.example.com/namespace/project/issues/123">Issue</a>`
-        replace_link_nodes_with_href(object_class.link_reference_pattern) do |link, text|
-          object_link_filter(link, object_class.link_reference_pattern, link_text: text)
+          # `[Issue](http://gitlab.example.com/namespace/project/issues/123)`, which is turned into
+          # `<a href="http://gitlab.example.com/namespace/project/issues/123">Issue</a>`
+          replace_link_nodes_with_href(object_class.link_reference_pattern) do |link, text|
+            object_link_filter(link, object_class.link_reference_pattern, link_text: text)
+          end
         end
       end
 
diff --git a/lib/banzai/filter/milestone_reference_filter.rb b/lib/banzai/filter/milestone_reference_filter.rb
new file mode 100644
index 00000000000..e88b27c1fae
--- /dev/null
+++ b/lib/banzai/filter/milestone_reference_filter.rb
@@ -0,0 +1,22 @@
+require 'banzai'
+
+module Banzai
+  module Filter
+    # HTML filter that replaces milestone references with links.
+    class MilestoneReferenceFilter < AbstractReferenceFilter
+      def self.object_class
+        Milestone
+      end
+
+      def find_object(project, id)
+        project.milestones.find_by(iid: id)
+      end
+
+      def url_for_object(issue, project)
+        h = Gitlab::Application.routes.url_helpers
+        h.namespace_project_milestone_url(project.namespace, project, milestone,
+                                        only_path: context[:only_path])
+      end
+    end
+  end
+end
diff --git a/lib/banzai/filter/redactor_filter.rb b/lib/banzai/filter/redactor_filter.rb
index f01a32b5ae5..66f77902319 100644
--- a/lib/banzai/filter/redactor_filter.rb
+++ b/lib/banzai/filter/redactor_filter.rb
@@ -10,7 +10,7 @@ module Banzai
     #
     class RedactorFilter < HTML::Pipeline::Filter
       def call
-        doc.css('a.gfm').each do |node|
+        Querying.css(doc, 'a.gfm').each do |node|
           unless user_can_see_reference?(node)
             # The reference should be replaced by the original text,
             # which is not always the same as the rendered text.
diff --git a/lib/banzai/filter/reference_filter.rb b/lib/banzai/filter/reference_filter.rb
index 8ca05ace88c..5dd6d2fe3c7 100644
--- a/lib/banzai/filter/reference_filter.rb
+++ b/lib/banzai/filter/reference_filter.rb
@@ -124,7 +124,7 @@ module Banzai
       def replace_link_nodes_with_text(pattern)
         return doc if project.nil?
 
-        doc.search('a').each do |node|
+        doc.xpath('descendant-or-self::a').each do |node|
           klass = node.attr('class')
           next if klass && klass.include?('gfm')
 
@@ -133,7 +133,7 @@ module Banzai
 
           next unless link && text
 
-          link = URI.decode(link)
+          link = CGI.unescape(link)
           # Ignore ending punctionation like periods or commas
           next unless link == text && text =~ /\A#{pattern}/
 
@@ -162,7 +162,7 @@ module Banzai
       def replace_link_nodes_with_href(pattern)
         return doc if project.nil?
 
-        doc.search('a').each do |node|
+        doc.xpath('descendant-or-self::a').each do |node|
           klass = node.attr('class')
           next if klass && klass.include?('gfm')
 
@@ -170,7 +170,7 @@ module Banzai
           text = node.text
 
           next unless link && text
-          link = URI.decode(link)
+          link = CGI.unescape(link)
           next unless link && link =~ /\A#{pattern}\z/
 
           html = yield link, text
diff --git a/lib/banzai/filter/reference_gatherer_filter.rb b/lib/banzai/filter/reference_gatherer_filter.rb
index 12412ff7ea9..bef04112919 100644
--- a/lib/banzai/filter/reference_gatherer_filter.rb
+++ b/lib/banzai/filter/reference_gatherer_filter.rb
@@ -16,7 +16,7 @@ module Banzai
       end
 
       def call
-        doc.css('a.gfm').each do |node|
+        Querying.css(doc, 'a.gfm').each do |node|
           gather_references(node)
         end
 
diff --git a/lib/banzai/filter/relative_link_filter.rb b/lib/banzai/filter/relative_link_filter.rb
index 5a081125f21..66f166939e4 100644
--- a/lib/banzai/filter/relative_link_filter.rb
+++ b/lib/banzai/filter/relative_link_filter.rb
@@ -91,7 +91,7 @@ module Banzai
         parts = request_path.split('/')
         parts.pop if path_type(request_path) != 'tree'
 
-        while parts.length > 1 && path.start_with?('../')
+        while path.start_with?('../')
           parts.pop
           path.sub!('../', '')
         end
diff --git a/lib/banzai/filter/task_list_filter.rb b/lib/banzai/filter/task_list_filter.rb
index bdf7c2ebdfc..d0ce13003a5 100644
--- a/lib/banzai/filter/task_list_filter.rb
+++ b/lib/banzai/filter/task_list_filter.rb
@@ -12,13 +12,18 @@ module Banzai
     #
     # See https://github.com/github/task_list/pull/60
     class TaskListFilter < TaskList::Filter
-      def add_css_class(node, *new_class_names)
+      def add_css_class_with_fix(node, *new_class_names)
         if new_class_names.include?('task-list')
-          super if node.children.any? { |c| c['class'] == 'task-list-item' }
-        else
-          super
+          # Don't add class to all lists
+          return
+        elsif new_class_names.include?('task-list-item')
+          add_css_class_without_fix(node.parent, 'task-list')
         end
+
+        add_css_class_without_fix(node, *new_class_names)
       end
+
+      alias_method_chain :add_css_class, :fix
     end
   end
 end
diff --git a/lib/banzai/pipeline/gfm_pipeline.rb b/lib/banzai/pipeline/gfm_pipeline.rb
index 38750b55ec7..838155e8831 100644
--- a/lib/banzai/pipeline/gfm_pipeline.rb
+++ b/lib/banzai/pipeline/gfm_pipeline.rb
@@ -22,6 +22,7 @@ module Banzai
           Filter::CommitRangeReferenceFilter,
           Filter::CommitReferenceFilter,
           Filter::LabelReferenceFilter,
+          Filter::MilestoneReferenceFilter,
 
           Filter::TaskListFilter
         ]
diff --git a/lib/banzai/pipeline/single_line_pipeline.rb b/lib/banzai/pipeline/single_line_pipeline.rb
index 6725c9039a9..a3c9d4f43aa 100644
--- a/lib/banzai/pipeline/single_line_pipeline.rb
+++ b/lib/banzai/pipeline/single_line_pipeline.rb
@@ -3,7 +3,23 @@ require 'banzai'
 module Banzai
   module Pipeline
     class SingleLinePipeline < GfmPipeline
+      def self.filters
+        @filters ||= [
+          Filter::SanitizationFilter,
 
+          Filter::EmojiFilter,
+          Filter::AutolinkFilter,
+          Filter::ExternalLinkFilter,
+
+          Filter::UserReferenceFilter,
+          Filter::IssueReferenceFilter,
+          Filter::ExternalIssueReferenceFilter,
+          Filter::MergeRequestReferenceFilter,
+          Filter::SnippetReferenceFilter,
+          Filter::CommitRangeReferenceFilter,
+          Filter::CommitReferenceFilter,
+        ]
+      end
     end
   end
 end
diff --git a/lib/banzai/querying.rb b/lib/banzai/querying.rb
new file mode 100644
index 00000000000..1e1b51e683e
--- /dev/null
+++ b/lib/banzai/querying.rb
@@ -0,0 +1,18 @@
+module Banzai
+  module Querying
+    # Searches a Nokogiri document using a CSS query, optionally optimizing it
+    # whenever possible.
+    #
+    # document - A document/element to search.
+    # query    - The CSS query to use.
+    #
+    # Returns a Nokogiri::XML::NodeSet.
+    def self.css(document, query)
+      # When using "a.foo" Nokogiri compiles this to "//a[...]" but
+      # "descendant::a[...]" is quite a bit faster and achieves the same result.
+      xpath = Nokogiri::CSS.xpath_for(query)[0].gsub(%r{^//}, 'descendant::')
+
+      document.xpath(xpath)
+    end
+  end
+end
diff --git a/lib/banzai/renderer.rb b/lib/banzai/renderer.rb
index 115ae914524..891c0fd7749 100644
--- a/lib/banzai/renderer.rb
+++ b/lib/banzai/renderer.rb
@@ -1,7 +1,5 @@
 module Banzai
   module Renderer
-    CACHE_ENABLED = false
-
     # Convert a Markdown String into an HTML-safe String of HTML
     #
     # Note that while the returned HTML will have been sanitized of dangerous
@@ -20,7 +18,7 @@ module Banzai
       cache_key = context.delete(:cache_key)
       cache_key = full_cache_key(cache_key, context[:pipeline])
 
-      if cache_key && CACHE_ENABLED
+      if cache_key
         Rails.cache.fetch(cache_key) do
           cacheless_render(text, context)
         end
diff --git a/lib/gitlab/backend/shell.rb b/lib/gitlab/backend/shell.rb
index 459e3d6bcdb..4c15d58d680 100644
--- a/lib/gitlab/backend/shell.rb
+++ b/lib/gitlab/backend/shell.rb
@@ -150,6 +150,18 @@ module Gitlab
                                    "#{path}.git", tag_name])
     end
 
+    # Gc repository
+    #
+    # path - project path with namespace
+    #
+    # Ex.
+    #   gc("gitlab/gitlab-ci")
+    #
+    def gc(path)
+      Gitlab::Utils.system_silent([gitlab_shell_projects_path, 'gc',
+                                   "#{path}.git"])
+    end
+
     # Add new key to gitlab-shell
     #
     # Ex.
diff --git a/lib/gitlab/build_data_builder.rb b/lib/gitlab/build_data_builder.rb
index 86bfa0a4378..34e949130da 100644
--- a/lib/gitlab/build_data_builder.rb
+++ b/lib/gitlab/build_data_builder.rb
@@ -23,6 +23,7 @@ module Gitlab
           build_started_at: build.started_at,
           build_finished_at: build.finished_at,
           build_duration: build.duration,
+          build_allow_failure: build.allow_failure,
 
           # TODO: do we still need it?
           project_id: project.id,
diff --git a/lib/gitlab/contributions_calendar.rb b/lib/gitlab/contributions_calendar.rb
index 8a7f8dc5003..85583dce9ee 100644
--- a/lib/gitlab/contributions_calendar.rb
+++ b/lib/gitlab/contributions_calendar.rb
@@ -45,11 +45,11 @@ module Gitlab
     end
 
     def starting_year
-      (Time.now - 1.year).strftime("%Y")
+      1.year.ago.year
     end
 
     def starting_month
-      Date.today.strftime("%m").to_i
+      Date.today.month
     end
   end
 end
diff --git a/lib/gitlab/current_settings.rb b/lib/gitlab/current_settings.rb
index 7a86c09158e..7f938780ab1 100644
--- a/lib/gitlab/current_settings.rb
+++ b/lib/gitlab/current_settings.rb
@@ -41,6 +41,9 @@ module Gitlab
       use_db && ActiveRecord::Base.connection.active? &&
                 !ActiveRecord::Migrator.needs_migration? &&
                 ActiveRecord::Base.connection.table_exists?('application_settings')
+
+    rescue ActiveRecord::NoDatabaseError
+      false
     end
   end
 end
diff --git a/lib/gitlab/email/receiver.rb b/lib/gitlab/email/receiver.rb
index 2b252b32887..2ca21af5bc8 100644
--- a/lib/gitlab/email/receiver.rb
+++ b/lib/gitlab/email/receiver.rb
@@ -74,7 +74,7 @@ module Gitlab
 
       def sent_notification
         return nil unless reply_key
-        
+
         SentNotification.for(reply_key)
       end
 
@@ -82,10 +82,7 @@ module Gitlab
         attachments = Email::AttachmentUploader.new(message).execute(sent_notification.project)
 
         attachments.each do |link|
-          text = "[#{link[:alt]}](#{link[:url]})"
-          text.prepend("!") if link[:is_image]
-
-          reply << "\n\n#{text}"
+          reply << "\n\n#{link[:markdown]}"
         end
 
         reply
diff --git a/lib/gitlab/fogbugz_import/importer.rb b/lib/gitlab/fogbugz_import/importer.rb
index 403ebeec474..db580b5e578 100644
--- a/lib/gitlab/fogbugz_import/importer.rb
+++ b/lib/gitlab/fogbugz_import/importer.rb
@@ -232,9 +232,7 @@ module Gitlab
 
         return nil if res.nil?
 
-        text = "[#{res['alt']}](#{res['url']})"
-        text = "!#{text}" if res['is_image']
-        text
+        res[:markdown]
       end
 
       def build_attachment_url(rel_url)
diff --git a/lib/gitlab/github_import/base_formatter.rb b/lib/gitlab/github_import/base_formatter.rb
new file mode 100644
index 00000000000..202263c6742
--- /dev/null
+++ b/lib/gitlab/github_import/base_formatter.rb
@@ -0,0 +1,21 @@
+module Gitlab
+  module GithubImport
+    class BaseFormatter
+      attr_reader :formatter, :project, :raw_data
+
+      def initialize(project, raw_data)
+        @project = project
+        @raw_data = raw_data
+        @formatter = Gitlab::ImportFormatter.new
+      end
+
+      private
+
+      def gl_user_id(github_id)
+        User.joins(:identities).
+          find_by("identities.extern_uid = ? AND identities.provider = 'github'", github_id.to_s).
+          try(:id)
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/github_import/comment_formatter.rb b/lib/gitlab/github_import/comment_formatter.rb
new file mode 100644
index 00000000000..7d58e53991a
--- /dev/null
+++ b/lib/gitlab/github_import/comment_formatter.rb
@@ -0,0 +1,45 @@
+module Gitlab
+  module GithubImport
+    class CommentFormatter < BaseFormatter
+      def attributes
+        {
+          project: project,
+          note: note,
+          commit_id: raw_data.commit_id,
+          line_code: line_code,
+          author_id: author_id,
+          created_at: raw_data.created_at,
+          updated_at: raw_data.updated_at
+        }
+      end
+
+      private
+
+      def author
+        raw_data.user.login
+      end
+
+      def author_id
+        gl_user_id(raw_data.user.id) || project.creator_id
+      end
+
+      def body
+        raw_data.body || ""
+      end
+
+      def line_code
+        if on_diff?
+          Gitlab::Diff::LineCode.generate(raw_data.path, raw_data.position, 0)
+        end
+      end
+
+      def on_diff?
+        raw_data.path && raw_data.position
+      end
+
+      def note
+        formatter.author_line(author) + body
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/github_import/importer.rb b/lib/gitlab/github_import/importer.rb
index b5720f6e2cb..2b0afbc7b39 100644
--- a/lib/gitlab/github_import/importer.rb
+++ b/lib/gitlab/github_import/importer.rb
@@ -12,39 +12,59 @@ module Gitlab
       end
 
       def execute
-        #Issues && Comments
+        import_issues
+        import_pull_requests
+
+        true
+      end
+
+      private
+
+      def import_issues
         client.list_issues(project.import_source, state: :all,
                                                   sort: :created,
-                                                  direction: :asc).each do |issue|
-          if issue.pull_request.nil?
-
-            body = @formatter.author_line(issue.user.login)
-            body += issue.body || ""
+                                                  direction: :asc).each do |raw_data|
+          gh_issue = IssueFormatter.new(project, raw_data)
 
-            if issue.comments > 0
-              body += @formatter.comments_header
+          if gh_issue.valid?
+            issue = Issue.create!(gh_issue.attributes)
 
-              client.issue_comments(project.import_source, issue.number).each do |c|
-                body += @formatter.comment(c.user.login, c.created_at, c.body)
-              end
+            if gh_issue.has_comments?
+              import_comments(gh_issue.number, issue)
             end
+          end
+        end
+      end
+
+      def import_pull_requests
+        client.pull_requests(project.import_source, state: :all,
+                                                    sort: :created,
+                                                    direction: :asc).each do |raw_data|
+          pull_request = PullRequestFormatter.new(project, raw_data)
 
-            project.issues.create!(
-              description: body,
-              title: issue.title,
-              state: issue.state == 'closed' ? 'closed' : 'opened',
-              author_id: gl_user_id(project, issue.user.id)
-            )
+          if !pull_request.cross_project? && pull_request.valid?
+            merge_request = MergeRequest.create!(pull_request.attributes)
+            import_comments(pull_request.number, merge_request)
+            import_comments_on_diff(pull_request.number, merge_request)
           end
         end
       end
 
-      private
+      def import_comments(issue_number, noteable)
+        comments = client.issue_comments(project.import_source, issue_number)
+        create_comments(comments, noteable)
+      end
 
-      def gl_user_id(project, github_id)
-        user = User.joins(:identities).
-          find_by("identities.extern_uid = ? AND identities.provider = 'github'", github_id.to_s)
-        (user && user.id) || project.creator_id
+      def import_comments_on_diff(pull_request_number, merge_request)
+        comments = client.pull_request_comments(project.import_source, pull_request_number)
+        create_comments(comments, merge_request)
+      end
+
+      def create_comments(comments, noteable)
+        comments.each do |raw_data|
+          comment = CommentFormatter.new(project, raw_data)
+          noteable.notes.create!(comment.attributes)
+        end
       end
     end
   end
diff --git a/lib/gitlab/github_import/issue_formatter.rb b/lib/gitlab/github_import/issue_formatter.rb
new file mode 100644
index 00000000000..1e3ba44f27c
--- /dev/null
+++ b/lib/gitlab/github_import/issue_formatter.rb
@@ -0,0 +1,66 @@
+module Gitlab
+  module GithubImport
+    class IssueFormatter < BaseFormatter
+      def attributes
+        {
+          project: project,
+          title: raw_data.title,
+          description: description,
+          state: state,
+          author_id: author_id,
+          assignee_id: assignee_id,
+          created_at: raw_data.created_at,
+          updated_at: updated_at
+        }
+      end
+
+      def has_comments?
+        raw_data.comments > 0
+      end
+
+      def number
+        raw_data.number
+      end
+
+      def valid?
+        raw_data.pull_request.nil?
+      end
+
+      private
+
+      def assigned?
+        raw_data.assignee.present?
+      end
+
+      def assignee_id
+        if assigned?
+          gl_user_id(raw_data.assignee.id)
+        end
+      end
+
+      def author
+        raw_data.user.login
+      end
+
+      def author_id
+        gl_user_id(raw_data.user.id) || project.creator_id
+      end
+
+      def body
+        raw_data.body || ""
+      end
+
+      def description
+        @formatter.author_line(author) + body
+      end
+
+      def state
+        raw_data.state == 'closed' ? 'closed' : 'opened'
+      end
+
+      def updated_at
+        state == 'closed' ? raw_data.closed_at : raw_data.updated_at
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/github_import/pull_request_formatter.rb b/lib/gitlab/github_import/pull_request_formatter.rb
new file mode 100644
index 00000000000..b7c47958cc7
--- /dev/null
+++ b/lib/gitlab/github_import/pull_request_formatter.rb
@@ -0,0 +1,101 @@
+module Gitlab
+  module GithubImport
+    class PullRequestFormatter < BaseFormatter
+      def attributes
+        {
+          title: raw_data.title,
+          description: description,
+          source_project: source_project,
+          source_branch: source_branch.name,
+          target_project: target_project,
+          target_branch: target_branch.name,
+          state: state,
+          author_id: author_id,
+          assignee_id: assignee_id,
+          created_at: raw_data.created_at,
+          updated_at: updated_at
+        }
+      end
+
+      def cross_project?
+        source_repo.fork == true
+      end
+
+      def number
+        raw_data.number
+      end
+
+      def valid?
+        source_branch.present? && target_branch.present?
+      end
+
+      private
+
+      def assigned?
+        raw_data.assignee.present?
+      end
+
+      def assignee_id
+        if assigned?
+          gl_user_id(raw_data.assignee.id)
+        end
+      end
+
+      def author
+        raw_data.user.login
+      end
+
+      def author_id
+        gl_user_id(raw_data.user.id) || project.creator_id
+      end
+
+      def body
+        raw_data.body || ""
+      end
+
+      def description
+        formatter.author_line(author) + body
+      end
+
+      def source_project
+        project
+      end
+
+      def source_repo
+        raw_data.head.repo
+      end
+
+      def source_branch
+        source_project.repository.find_branch(raw_data.head.ref)
+      end
+
+      def target_project
+        project
+      end
+
+      def target_branch
+        target_project.repository.find_branch(raw_data.base.ref)
+      end
+
+      def state
+        @state ||= case true
+                   when raw_data.state == 'closed' && raw_data.merged_at.present?
+                     'merged'
+                   when raw_data.state == 'closed'
+                     'closed'
+                   else
+                     'opened'
+                   end
+      end
+
+      def updated_at
+        case state
+        when 'merged' then raw_data.merged_at
+        when 'closed' then raw_data.closed_at
+        else
+          raw_data.updated_at
+        end
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/gitlab_import/importer.rb b/lib/gitlab/gitlab_import/importer.rb
index e24b94d6159..59926084d07 100644
--- a/lib/gitlab/gitlab_import/importer.rb
+++ b/lib/gitlab/gitlab_import/importer.rb
@@ -12,7 +12,7 @@ module Gitlab
       end
 
       def execute
-        project_identifier = URI.encode(project.import_source, '/')
+        project_identifier = CGI.escape(project.import_source, '/')
 
         #Issues && Comments
         issues = client.issues(project_identifier)
diff --git a/lib/gitlab/ldap/access.rb b/lib/gitlab/ldap/access.rb
index c438a3d167b..b2bdbc10d7f 100644
--- a/lib/gitlab/ldap/access.rb
+++ b/lib/gitlab/ldap/access.rb
@@ -5,7 +5,7 @@
 module Gitlab
   module LDAP
     class Access
-      attr_reader :adapter, :provider, :user
+      attr_reader :provider, :user
 
       def self.open(user, &block)
         Gitlab::LDAP::Adapter.open(user.ldap_identity.provider) do |adapter|
@@ -32,7 +32,7 @@ module Gitlab
       end
 
       def allowed?
-        if Gitlab::LDAP::Person.find_by_dn(user.ldap_identity.extern_uid, adapter)
+        if ldap_user
           return true unless ldap_config.active_directory
 
           # Block user in GitLab if he/she was blocked in AD
@@ -59,6 +59,10 @@ module Gitlab
       def ldap_config
         Gitlab::LDAP::Config.new(provider)
       end
+
+      def ldap_user
+        @ldap_user ||= Gitlab::LDAP::Person.find_by_dn(user.ldap_identity.extern_uid, adapter)
+      end
     end
   end
 end
diff --git a/lib/gitlab/ldap/adapter.rb b/lib/gitlab/ldap/adapter.rb
index 577a890a7d9..df65179bfea 100644
--- a/lib/gitlab/ldap/adapter.rb
+++ b/lib/gitlab/ldap/adapter.rb
@@ -70,19 +70,25 @@ module Gitlab
       end
 
       def ldap_search(*args)
-        results = ldap.search(*args)
+        # Net::LDAP's `time` argument doesn't work. Use Ruby `Timeout` instead.
+        Timeout.timeout(config.timeout) do
+          results = ldap.search(*args)
 
-        if results.nil?
-          response = ldap.get_operation_result
+          if results.nil?
+            response = ldap.get_operation_result
 
-          unless response.code.zero?
-            Rails.logger.warn("LDAP search error: #{response.message}")
-          end
+            unless response.code.zero?
+              Rails.logger.warn("LDAP search error: #{response.message}")
+            end
 
-          []
-        else
-          results
+            []
+          else
+            results
+          end
         end
+      rescue Timeout::Error
+        Rails.logger.warn("LDAP search timed out after #{config.timeout} seconds")
+        []
       end
     end
   end
diff --git a/lib/gitlab/ldap/config.rb b/lib/gitlab/ldap/config.rb
index 101a3285f4b..aff7ccb157f 100644
--- a/lib/gitlab/ldap/config.rb
+++ b/lib/gitlab/ldap/config.rb
@@ -88,6 +88,10 @@ module Gitlab
         options['attributes']
       end
 
+      def timeout
+        options['timeout'].to_i
+      end
+
       protected
       def base_config
         Gitlab.config.ldap
diff --git a/lib/gitlab/metrics.rb b/lib/gitlab/metrics.rb
index 2d266ccfe9e..88a265c6af2 100644
--- a/lib/gitlab/metrics.rb
+++ b/lib/gitlab/metrics.rb
@@ -6,16 +6,20 @@ module Gitlab
     METRICS_ROOT = Rails.root.join('lib', 'gitlab', 'metrics').to_s
     PATH_REGEX   = /^#{RAILS_ROOT}\/?/
 
-    def self.pool_size
-      current_application_settings[:metrics_pool_size] || 16
-    end
-
-    def self.timeout
-      current_application_settings[:metrics_timeout] || 10
+    def self.settings
+      @settings ||= {
+        enabled:               current_application_settings[:metrics_enabled],
+        pool_size:             current_application_settings[:metrics_pool_size],
+        timeout:               current_application_settings[:metrics_timeout],
+        method_call_threshold: current_application_settings[:metrics_method_call_threshold],
+        host:                  current_application_settings[:metrics_host],
+        port:                  current_application_settings[:metrics_port],
+        sample_interval:       current_application_settings[:metrics_sample_interval] || 15
+      }
     end
 
     def self.enabled?
-      current_application_settings[:metrics_enabled] || false
+      settings[:enabled] || false
     end
 
     def self.mri?
@@ -26,32 +30,13 @@ module Gitlab
       # This is memoized since this method is called for every instrumented
       # method. Loading data from an external cache on every method call slows
       # things down too much.
-      @method_call_threshold ||=
-        (current_application_settings[:metrics_method_call_threshold] || 10)
+      @method_call_threshold ||= settings[:method_call_threshold]
     end
 
     def self.pool
       @pool
     end
 
-    def self.hostname
-      @hostname
-    end
-
-    # Returns a relative path and line number based on the last application call
-    # frame.
-    def self.last_relative_application_frame
-      frame = caller_locations.find do |l|
-        l.path.start_with?(RAILS_ROOT) && !l.path.start_with?(METRICS_ROOT)
-      end
-
-      if frame
-        return frame.path.sub(PATH_REGEX, ''), frame.lineno
-      else
-        return nil, nil
-      end
-    end
-
     def self.submit_metrics(metrics)
       prepared = prepare_metrics(metrics)
 
@@ -85,19 +70,15 @@ module Gitlab
       value.to_s.gsub('=', '\\=')
     end
 
-    @hostname = Socket.gethostname
-
     # When enabled this should be set before being used as the usual pattern
     # "@foo ||= bar" is _not_ thread-safe.
     if enabled?
-      @pool = ConnectionPool.new(size: pool_size, timeout: timeout) do
-        host = current_application_settings[:metrics_host]
-        user = current_application_settings[:metrics_username]
-        pw   = current_application_settings[:metrics_password]
-        port = current_application_settings[:metrics_port]
+      @pool = ConnectionPool.new(size: settings[:pool_size], timeout: settings[:timeout]) do
+        host = settings[:host]
+        port = settings[:port]
 
         InfluxDB::Client.
-          new(udp: { host: host, port: port }, username: user, password: pw)
+          new(udp: { host: host, port: port })
       end
     end
   end
diff --git a/lib/gitlab/metrics/instrumentation.rb b/lib/gitlab/metrics/instrumentation.rb
index 06fc2f25948..d9fce2e6758 100644
--- a/lib/gitlab/metrics/instrumentation.rb
+++ b/lib/gitlab/metrics/instrumentation.rb
@@ -123,6 +123,8 @@ module Gitlab
               duration = (Time.now - start) * 1000.0
 
               if duration >= Gitlab::Metrics.method_call_threshold
+                trans.increment(:method_duration, duration)
+
                 trans.add_metric(Gitlab::Metrics::Instrumentation::SERIES,
                                  { duration: duration },
                                  method: #{label.inspect})
diff --git a/lib/gitlab/metrics/metric.rb b/lib/gitlab/metrics/metric.rb
index 753008df99a..7ea9555cc8c 100644
--- a/lib/gitlab/metrics/metric.rb
+++ b/lib/gitlab/metrics/metric.rb
@@ -17,11 +17,8 @@ module Gitlab
       # Returns a Hash in a format that can be directly written to InfluxDB.
       def to_hash
         {
-          series: @series,
-          tags:   @tags.merge(
-            hostname:     Metrics.hostname,
-            process_type: Sidekiq.server? ? 'sidekiq' : 'rails'
-          ),
+          series:    @series,
+          tags:      @tags,
           values:    @values,
           timestamp: @created_at.to_i * 1_000_000_000
         }
diff --git a/lib/gitlab/metrics/obfuscated_sql.rb b/lib/gitlab/metrics/obfuscated_sql.rb
deleted file mode 100644
index fe97d7a0534..00000000000
--- a/lib/gitlab/metrics/obfuscated_sql.rb
+++ /dev/null
@@ -1,47 +0,0 @@
-module Gitlab
-  module Metrics
-    # Class for producing SQL queries with sensitive data stripped out.
-    class ObfuscatedSQL
-      REPLACEMENT = /
-        \d+(\.\d+)?      # integers, floats
-        | '.+?'          # single quoted strings
-        | \/.+?(?<!\\)\/ # regexps (including escaped slashes)
-      /x
-
-      MYSQL_REPLACEMENTS = /
-        ".+?" # double quoted strings
-      /x
-
-      # Regex to replace consecutive placeholders with a single one indicating
-      # the length. This can be useful when a "IN" statement uses thousands of
-      # IDs (storing this would just be a waste of space).
-      CONSECUTIVE = /(\?(\s*,\s*)?){2,}/
-
-      # sql - The raw SQL query as a String.
-      def initialize(sql)
-        @sql = sql
-      end
-
-      # Returns a new, obfuscated SQL query.
-      def to_s
-        regex = REPLACEMENT
-
-        if Gitlab::Database.mysql?
-          regex = Regexp.union(regex, MYSQL_REPLACEMENTS)
-        end
-
-        sql = @sql.gsub(regex, '?').gsub(CONSECUTIVE) do |match|
-          "#{match.count(',') + 1} values"
-        end
-
-        # InfluxDB escapes double quotes upon output, so lets get rid of them
-        # whenever we can.
-        if Gitlab::Database.postgresql?
-          sql = sql.delete('"')
-        end
-
-        sql.tr("\n", ' ')
-      end
-    end
-  end
-end
diff --git a/lib/gitlab/metrics/rack_middleware.rb b/lib/gitlab/metrics/rack_middleware.rb
index 5c0587c4c51..6f179789d3e 100644
--- a/lib/gitlab/metrics/rack_middleware.rb
+++ b/lib/gitlab/metrics/rack_middleware.rb
@@ -32,17 +32,15 @@ module Gitlab
       def transaction_from_env(env)
         trans = Transaction.new
 
-        trans.add_tag(:request_method, env['REQUEST_METHOD'])
-        trans.add_tag(:request_uri, env['REQUEST_URI'])
+        trans.set(:request_uri, env['REQUEST_URI'])
+        trans.set(:request_method, env['REQUEST_METHOD'])
 
         trans
       end
 
       def tag_controller(trans, env)
-        controller = env[CONTROLLER_KEY]
-        label      = "#{controller.class.name}##{controller.action_name}"
-
-        trans.add_tag(:action, label)
+        controller   = env[CONTROLLER_KEY]
+        trans.action = "#{controller.class.name}##{controller.action_name}"
       end
     end
   end
diff --git a/lib/gitlab/metrics/sampler.rb b/lib/gitlab/metrics/sampler.rb
index 998578e1c0a..fc709222a9b 100644
--- a/lib/gitlab/metrics/sampler.rb
+++ b/lib/gitlab/metrics/sampler.rb
@@ -7,9 +7,14 @@ module Gitlab
     # statistics, etc.
     class Sampler
       # interval - The sampling interval in seconds.
-      def initialize(interval = 15)
-        @interval = interval
-        @metrics  = []
+      def initialize(interval = Metrics.settings[:sample_interval])
+        interval_half = interval.to_f / 2
+
+        @interval       = interval
+        @interval_steps = (-interval_half..interval_half).step(0.1).to_a
+        @last_step      = nil
+
+        @metrics = []
 
         @last_minor_gc = Delta.new(GC.stat[:minor_gc_count])
         @last_major_gc = Delta.new(GC.stat[:major_gc_count])
@@ -26,7 +31,7 @@ module Gitlab
           Thread.current.abort_on_exception = true
 
           loop do
-            sleep(@interval)
+            sleep(sleep_interval)
 
             sample
           end
@@ -50,12 +55,11 @@ module Gitlab
       end
 
       def sample_memory_usage
-        @metrics << Metric.new('memory_usage', value: System.memory_usage)
+        add_metric('memory_usage', value: System.memory_usage)
       end
 
       def sample_file_descriptors
-        @metrics << Metric.
-          new('file_descriptors', value: System.file_descriptor_count)
+        add_metric('file_descriptors', value: System.file_descriptor_count)
       end
 
       if Metrics.mri?
@@ -69,7 +73,7 @@ module Gitlab
           counts['Symbol'] = Symbol.all_symbols.length
 
           counts.each do |name, count|
-            @metrics << Metric.new('object_counts', { count: count }, type: name)
+            add_metric('object_counts', { count: count }, type: name)
           end
         end
       else
@@ -91,7 +95,34 @@ module Gitlab
 
         stats[:count] = stats[:minor_gc_count] + stats[:major_gc_count]
 
-        @metrics << Metric.new('gc_statistics', stats)
+        add_metric('gc_statistics', stats)
+      end
+
+      def add_metric(series, values, tags = {})
+        prefix = sidekiq? ? 'sidekiq_' : 'rails_'
+
+        @metrics << Metric.new("#{prefix}#{series}", values, tags)
+      end
+
+      def sidekiq?
+        Sidekiq.server?
+      end
+
+      # Returns the sleep interval with a random adjustment.
+      #
+      # The random adjustment is put in place to ensure we:
+      #
+      # 1. Don't generate samples at the exact same interval every time (thus
+      #    potentially missing anything that happens in between samples).
+      # 2. Don't sample data at the same interval two times in a row.
+      def sleep_interval
+        while step = @interval_steps.sample
+          if step != @last_step
+            @last_step = step
+
+            return @interval + @last_step
+          end
+        end
       end
     end
   end
diff --git a/lib/gitlab/metrics/sidekiq_middleware.rb b/lib/gitlab/metrics/sidekiq_middleware.rb
index ad441decfa2..fd98aa3412e 100644
--- a/lib/gitlab/metrics/sidekiq_middleware.rb
+++ b/lib/gitlab/metrics/sidekiq_middleware.rb
@@ -5,19 +5,14 @@ module Gitlab
     # This middleware is intended to be used as a server-side middleware.
     class SidekiqMiddleware
       def call(worker, message, queue)
-        trans = Transaction.new
+        trans = Transaction.new("#{worker.class.name}#perform")
 
         begin
           trans.run { yield }
         ensure
-          tag_worker(trans, worker)
           trans.finish
         end
       end
-
-      def tag_worker(trans, worker)
-        trans.add_tag(:action, "#{worker.class.name}#perform")
-      end
     end
   end
 end
diff --git a/lib/gitlab/metrics/subscribers/action_view.rb b/lib/gitlab/metrics/subscribers/action_view.rb
index 7e0dcf99d92..2e9dd4645e3 100644
--- a/lib/gitlab/metrics/subscribers/action_view.rb
+++ b/lib/gitlab/metrics/subscribers/action_view.rb
@@ -19,6 +19,7 @@ module Gitlab
           values = values_for(event)
           tags   = tags_for(event)
 
+          current_transaction.increment(:view_duration, event.duration)
           current_transaction.add_metric(SERIES, values, tags)
         end
 
@@ -32,16 +33,8 @@ module Gitlab
 
         def tags_for(event)
           path = relative_path(event.payload[:identifier])
-          tags = { view: path }
 
-          file, line = Metrics.last_relative_application_frame
-
-          if file and line
-            tags[:file] = file
-            tags[:line] = line
-          end
-
-          tags
+          { view: path }
         end
 
         def current_transaction
diff --git a/lib/gitlab/metrics/subscribers/active_record.rb b/lib/gitlab/metrics/subscribers/active_record.rb
index d947c128ce2..8008b3bc895 100644
--- a/lib/gitlab/metrics/subscribers/active_record.rb
+++ b/lib/gitlab/metrics/subscribers/active_record.rb
@@ -1,44 +1,18 @@
 module Gitlab
   module Metrics
     module Subscribers
-      # Class for tracking raw SQL queries.
-      #
-      # Queries are obfuscated before being logged to ensure no private data is
-      # exposed via InfluxDB/Grafana.
+      # Class for tracking the total query duration of a transaction.
       class ActiveRecord < ActiveSupport::Subscriber
         attach_to :active_record
 
-        SERIES = 'sql_queries'
-
         def sql(event)
           return unless current_transaction
 
-          values = values_for(event)
-          tags   = tags_for(event)
-
-          current_transaction.add_metric(SERIES, values, tags)
+          current_transaction.increment(:sql_duration, event.duration)
         end
 
         private
 
-        def values_for(event)
-          { duration: event.duration }
-        end
-
-        def tags_for(event)
-          sql  = ObfuscatedSQL.new(event.payload[:sql]).to_s
-          tags = { sql: sql }
-
-          file, line = Metrics.last_relative_application_frame
-
-          if file and line
-            tags[:file] = file
-            tags[:line] = line
-          end
-
-          tags
-        end
-
         def current_transaction
           Transaction.current
         end
diff --git a/lib/gitlab/metrics/transaction.rb b/lib/gitlab/metrics/transaction.rb
index a61dbd989e7..2578ddc49f4 100644
--- a/lib/gitlab/metrics/transaction.rb
+++ b/lib/gitlab/metrics/transaction.rb
@@ -4,45 +4,64 @@ module Gitlab
     class Transaction
       THREAD_KEY = :_gitlab_metrics_transaction
 
-      SERIES = 'transactions'
+      attr_reader :tags, :values
 
-      attr_reader :uuid, :tags
+      attr_accessor :action
 
       def self.current
         Thread.current[THREAD_KEY]
       end
 
-      # name - The name of this transaction as a String.
-      def initialize
+      # action - A String describing the action performed, usually the class
+      #          plus method name.
+      def initialize(action = nil)
         @metrics = []
-        @uuid    = SecureRandom.uuid
 
         @started_at  = nil
         @finished_at = nil
 
-        @tags = {}
+        @values = Hash.new(0)
+        @tags   = {}
+        @action = action
+
+        @memory_before = 0
+        @memory_after  = 0
       end
 
       def duration
         @finished_at ? (@finished_at - @started_at) * 1000.0 : 0.0
       end
 
+      def allocated_memory
+        @memory_after - @memory_before
+      end
+
       def run
         Thread.current[THREAD_KEY] = self
 
-        @started_at = Time.now
+        @memory_before = System.memory_usage
+        @started_at    = Time.now
 
         yield
       ensure
-        @finished_at = Time.now
+        @memory_after = System.memory_usage
+        @finished_at  = Time.now
 
         Thread.current[THREAD_KEY] = nil
       end
 
       def add_metric(series, values, tags = {})
-        tags = tags.merge(transaction_id: @uuid)
+        prefix = sidekiq? ? 'sidekiq_' : 'rails_'
+
+        @metrics << Metric.new("#{prefix}#{series}", values, tags)
+      end
+
+      def increment(name, value)
+        @values[name] += value
+      end
 
-        @metrics << Metric.new(series, values, tags)
+      def set(name, value)
+        @values[name] = value
       end
 
       def add_tag(key, value)
@@ -55,11 +74,29 @@ module Gitlab
       end
 
       def track_self
-        add_metric(SERIES, { duration: duration }, @tags)
+        values = { duration: duration, allocated_memory: allocated_memory }
+
+        @values.each do |name, value|
+          values[name] = value
+        end
+
+        add_metric('transactions', values, @tags)
       end
 
       def submit
-        Metrics.submit_metrics(@metrics.map(&:to_hash))
+        metrics = @metrics.map do |metric|
+          hash = metric.to_hash
+
+          hash[:tags][:action] ||= @action if @action
+
+          hash
+        end
+
+        Metrics.submit_metrics(metrics)
+      end
+
+      def sidekiq?
+        Sidekiq.server?
       end
     end
   end
diff --git a/lib/gitlab/reference_extractor.rb b/lib/gitlab/reference_extractor.rb
index be795649e59..4164e998dd1 100644
--- a/lib/gitlab/reference_extractor.rb
+++ b/lib/gitlab/reference_extractor.rb
@@ -19,7 +19,7 @@ module Gitlab
       super(text, context.merge(project: project))
     end
 
-    %i(user label merge_request snippet commit commit_range).each do |type|
+    %i(user label milestone merge_request snippet commit commit_range).each do |type|
       define_method("#{type}s") do
         @references[type] ||= references(type, reference_context)
       end
diff --git a/lib/tasks/gitlab/check.rake b/lib/tasks/gitlab/check.rake
index 0469c5a61c3..2dc2953e328 100644
--- a/lib/tasks/gitlab/check.rake
+++ b/lib/tasks/gitlab/check.rake
@@ -431,7 +431,7 @@ namespace :gitlab do
         try_fixing_it(
           "sudo chmod -R ug+rwX,o-rwx #{repo_base_path}",
           "sudo chmod -R ug-s #{repo_base_path}",
-          "find #{repo_base_path} -type d -print0 | sudo xargs -0 chmod g+s"
+          "sudo find #{repo_base_path} -type d -print0 | sudo xargs -0 chmod g+s"
         )
         for_more_information(
           see_installation_guide_section "GitLab Shell"
diff --git a/lib/tasks/gitlab/task_helpers.rake b/lib/tasks/gitlab/task_helpers.rake
index ebe516ec879..8c63877e51c 100644
--- a/lib/tasks/gitlab/task_helpers.rake
+++ b/lib/tasks/gitlab/task_helpers.rake
@@ -2,6 +2,8 @@ module Gitlab
   class TaskAbortedByUserError < StandardError; end
 end
 
+String.disable_colorization = true unless STDOUT.isatty
+
 namespace :gitlab do
 
   # Ask if the user wants to continue
diff --git a/lib/version_check.rb b/lib/version_check.rb
index ea23344948c..91ad07feee5 100644
--- a/lib/version_check.rb
+++ b/lib/version_check.rb
@@ -13,6 +13,6 @@ class VersionCheck
   end
 
   def host
-    'https://version.gitlab.com/check.png'
+    'https://version.gitlab.com/check.svg'
   end
 end