Merge branch 'mr-widget-alignment' into 'master'

Fixed the alignment in the MR widget

## What does this MR do?

Fixes the alignment of the browse button in the MR widget

## Screenshots (if relevant)

![Screen_Shot_2016-07-17_at_17.47.54](/uploads/41dcb0fad38fdd4dbccfda5ffaeaec6e/Screen_Shot_2016-07-17_at_17.47.54.png)

See merge request !5307

app/assets/stylesheets/pages/merge_requests.scss

@@ -270,7 +270,7 @@
     .item-title {
       @media (min-width: $screen-sm-min) {
-        width: 49%;
+        width: 45%;
       }
     }