Merge branch 'remove_artifact' into 'master'

Remove artifact

This commit 07a9d44d caused letter a to be shown 72 times when the commit is being edited, removed that.

app/assets/stylesheets/generic/forms.scss

@@ -82,6 +82,7 @@ label {
   font-family: $monospace_font;
   $left: 12px;
   .max-width-marker {
+    width: 72ch;
     color: rgba(0, 0, 0, 0.0);
     font-family: inherit;
     left: $left;

app/views/shared/_commit_message_container.html.haml

 .commit-message-container
   .max-width-marker
-    -# When the `ch` CSS length unit becomes widely supported `http://www.quirksmode.org/css/units-values` remove this workaround.
-    = 'a' * 72
   = textarea