Fix squared buttons by removing not needed CSS classes

Also removes dropdown HTML where is not needed.

app/assets/javascripts/notes.js

@@ -739,7 +739,7 @@ require('./task_list');
 
     Notes.prototype.replyToDiscussionNote = function(e) {
       var form, replyLink;
-      form = this.formClone.clone();
+      form =  this.cleanForm(this.formClone.clone());
       replyLink = $(e.target).closest(".js-discussion-reply-button");
       // insert the form after the button
       replyLink
@@ -863,7 +863,7 @@ require('./task_list');
       }
 
       if (addForm) {
-        newForm = this.formClone.clone();
+        newForm = this.cleanForm(this.formClone.clone());
         newForm.appendTo(notesContent);
         // show the form
         return this.setupDiscussionNoteForm($link, newForm);
@@ -1049,6 +1049,20 @@ require('./task_list');
       });
     };
 
+    Notes.prototype.cleanForm = function($form) {
+      // Remove JS classes that are not needed here
+      $form
+        .find('.js-comment-type-dropdown')
+        .removeClass('btn-group');
+
+      // Remove dropdown
+      $form
+        .find('.dropdown-menu')
+        .remove();
+
+      return $form;
+    }
+
     return Notes;
   })();
 }).call(window);

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

 - noteable_type = @note.noteable_type
 
-.btn-group.append-right-10.comment-type-dropdown.js-comment-type-dropdown
+.pull-left.btn-group.append-right-10.comment-type-dropdown.js-comment-type-dropdown
   %button.btn.btn-nr.btn-create.comment-btn.js-comment-button.js-comment-submit-button
     Comment
   - if @note.can_be_discussion_note?