Merge branch 'winh-note-form-dropdown' into 'master'

Make comment form dropdown style consistent

See merge request !13473

app/assets/stylesheets/pages/note_form.scss

@@ -23,6 +23,8 @@
 .new-note,
 .note-edit-form {
   .note-form-actions {
+    @include new-style-dropdown;
+
     position: relative;
     margin: $gl-padding 0 0;
   }