Merge branch 'add-notes-notifications-to-services' into 'master'

Add notes notifications to services

This merge request builds on top of a few other merge requests:

* https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/237
* https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/350

The purpose of this merge request is to add service notification support when a user comments on one of the following:

* commits
* issues
* merge requests
* code snippets

Currently HipChat and Slack are only supported. The admin can select which events to toggle on or off.

## Questions

All note events are bundled under the `note` event type. Is this okay, or does it make more sense to have individual events and/or change the `object_type` attribute in the hook data?

Also, does it look better to link the entire `merge request #X` as opposed to just `#X`? I like the former.

## Before

![Screen Shot 2015-03-01 at 3.05.56 PM](https://gitlab.com/uploads/stanhu/gitlab-ce/8ae828e652/Screen_Shot_2015-03-01_at_3.05.56_PM.png)

## After

![Screen Shot 2015-03-06 at 6.24.40 AM](https://gitlab.com/uploads/gitlab-org/gitlab-ce/7b866ae02b/Screen_Shot_2015-03-06_at_6.24.40_AM.png)

### Slack

![Screen Shot 2015-03-01 at 2.59.00 PM](https://gitlab.com/uploads/stanhu/gitlab-ce/0147c2dc38/Screen_Shot_2015-03-01_at_2.59.00_PM.png)

### HipChat

![Screen Shot 2015-03-01 at 2.59.19 PM](https://gitlab.com/uploads/stanhu/gitlab-ce/14e78fc61c/Screen_Shot_2015-03-01_at_2.59.19_PM.png)

See merge request !358

1 files changed, 2 insertions, 1 deletions

diff --git a/db/schema.rb b/db/schema.rb
index 1a9b512e159..a686bb4b3cd 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150223022001) do
+ActiveRecord::Schema.define(version: 20150225065047) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -371,6 +371,7 @@ ActiveRecord::Schema.define(version: 20150223022001) do
     t.boolean  "issues_events",         default: true
     t.boolean  "merge_requests_events", default: true
     t.boolean  "tag_push_events",       default: true
+    t.boolean  "note_events",           default: true,  null: false
   end
 
   add_index "services", ["created_at", "id"], name: "index_services_on_created_at_and_id", using: :btree