removing last chunk of MR ajax changes, rest will be in another MR

app/models/merge_request.rb

@@ -466,6 +466,16 @@ class MergeRequest < ActiveRecord::Base
     ::Gitlab::GitAccess.new(user, project).can_push_to_branch?(target_branch)
   end
+  def state_human_name
+    if merged?
+      "Merged"
+    elsif closed?
+      "Closed"
+    else
+      "Open"
+    end
+  end
+
   def target_sha
     @target_sha ||= target_project.
       repository.commit(target_branch).sha

app/views/projects/issues/_discussion.html.haml

 - content_for :note_actions do
   - if can?(current_user, :update_issue, @issue)
-    = link_to 'Reopen Issue', issue_path(@issue, issue: {state_event: :reopen}, status_only: true, format: 'json'), data: {no_turbolink: true}, class: "btn btn-nr btn-grouped btn-reopen btn-comment js-note-target-reopen #{issue_button_visibility(@issue, false)}", title: 'Reopen Issue'
-    = link_to 'Close Issue', issue_path(@issue, issue: {state_event: :close}, status_only: true, format: 'json'), data: {no_turbolink: true}, class: "btn btn-nr btn-grouped btn-close btn-comment js-note-target-close #{issue_button_visibility(@issue, true)}", title: 'Close Issue'
+    - if @issue.closed?
+      = link_to 'Reopen Issue', issue_path(@issue, issue: {state_event: :reopen}, status_only: true), method: :put, class: 'btn btn-nr btn-grouped btn-reopen js-note-target-reopen', title: 'Reopen Issue'
+    - else
+      = link_to 'Close Issue', issue_path(@issue, issue: {state_event: :close}, status_only: true), method: :put, class: 'btn btn-nr btn-grouped btn-close js-note-target-close', title: 'Close Issue'
 #notes
   = render 'projects/notes/notes_with_form'

app/views/projects/merge_requests/widget/_closed.html.haml

-.mr-state-widget.mr-state-widget-closed{class: merge_request_widget_visibility(@merge_request, 'closed')}
+.mr-state-widget
   = render 'projects/merge_requests/widget/heading'
   .mr-widget-body
     %h4

app/views/projects/merge_requests/widget/_locked.html.haml

-.mr-state-widget.mr-state-widget-locked{class: merge_request_widget_visibility(@merge_request, 'locked')}
+.mr-state-widget
   = render 'projects/merge_requests/widget/heading'
   .mr-widget-body
     %h4

app/views/projects/merge_requests/widget/_merged.html.haml

-.mr-state-widget.mr-state-widget-merged{class: merge_request_widget_visibility(@merge_request, 'merged')}
+.mr-state-widget
   = render 'projects/merge_requests/widget/heading'
   .mr-widget-body
     %h4