Merge branch 'border-radius-fixx' into 'master'

Border radius fixx

Fixes the border radius in the description box.

See merge request !1416

app/assets/stylesheets/generic/gfm.scss

@@ -4,6 +4,7 @@
 .issue-form, .merge-request-form, .wiki-form {
   .description {
     height: 20em;
+    border-top-left-radius: 0;
   }
 }