Merge branch 'comment-form-button-spacing' into 'master'

Fixed alignment of buttons in note forms

## What does this MR do?

Due to a CSS change on some buttons, the alignment of the save button on the note form went off. Also, it made no sense to have `.btn-grouped` as the button wasn't in a group.

## Screenshots (if relevant)

![Screen_Shot_2016-06-17_at_11.43.33](/uploads/5d9037a48ff6179fc906bdf0c6d5ff47/Screen_Shot_2016-06-17_at_11.43.33.png)

![Screen_Shot_2016-06-17_at_11.43.43](/uploads/8b130a25e8f73e79578d38f5f7aff4fb/Screen_Shot_2016-06-17_at_11.43.43.png)


See merge request !4740

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, original_text: "Reopen issue", alternative_text: "Comment & reopen issue"}, 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, original_text: "Close issue", alternative_text: "Comment & close issue"}, class: "btn btn-nr btn-grouped btn-close btn-comment js-note-target-close #{issue_button_visibility(@issue, true)}", title: 'Close issue'
+    = link_to 'Reopen issue', issue_path(@issue, issue: {state_event: :reopen}, status_only: true, format: 'json'), data: {no_turbolink: true, original_text: "Reopen issue", alternative_text: "Comment & reopen issue"}, class: "btn btn-nr 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, original_text: "Close issue", alternative_text: "Comment & close issue"}, class: "btn btn-nr btn-close btn-comment js-note-target-close #{issue_button_visibility(@issue, true)}", title: 'Close issue'
 
 #notes
   = render 'projects/notes/notes_with_form'

app/views/projects/notes/_edit_form.html.haml

@@ -6,6 +6,6 @@
       = render 'projects/notes/hints'
 
     .note-form-actions.clearfix
-      = f.submit 'Save Comment', class: 'btn btn-nr btn-save btn-grouped js-comment-button'
+      = f.submit 'Save Comment', class: 'btn btn-nr btn-save js-comment-button'
       %button.btn.btn-nr.btn-cancel.note-edit-cancel{ type: 'button' }
         Cancel

app/views/projects/notes/_form.html.haml

@@ -14,7 +14,7 @@
     .error-alert
 
   .note-form-actions.clearfix
-    = f.submit 'Comment', class: "btn btn-nr btn-create comment-btn btn-grouped js-comment-button"
+    = f.submit 'Comment', class: "btn btn-nr btn-create append-right-10 comment-btn js-comment-button"
     = yield(:note_actions)
     %a.btn.btn-cancel.js-note-discard{role: "button", data: {cancel_text: "Cancel"}}
       Discard draft