Fix display of promote to group label

Since label presenter is used in label index view, label class
check doesn't work as expected because the class is now LabelPresenter.

Also `label.subject` doesn't work as expected now because Label's model
`subject` method is shadowed by Gitlab's presenter's method which uses
`subject` for referencing the original object.

Instead we use a presenter's method for both checks now.

`label_deletion_confirm_text` is not used anywhere so it's removed

1 files changed, 8 insertions, 0 deletions

diff --git a/app/presenters/label_presenter.rb b/app/presenters/label_presenter.rb
index 5227ef353c3..1077bf543d9 100644
--- a/app/presenters/label_presenter.rb
+++ b/app/presenters/label_presenter.rb
@@ -35,6 +35,14 @@ class LabelPresenter < Gitlab::View::Presenter::Delegated
     issuable_subject.is_a?(Project) && label.is_a?(GroupLabel)
   end
 
+  def project_label?
+    label.is_a?(ProjectLabel)
+  end
+
+  def subject_name
+    label.subject.name
+  end
+
   private
 
   def context_subject