Merge branch 'code-wrapping' into 'master'

Fix side-by-side code format & commit message wrap

![Screen_Shot_2016-04-07_at_1.31.28_PM](/uploads/bad00284e4dfbec1fdd75220c34f4a98/Screen_Shot_2016-04-07_at_1.31.28_PM.png)

![Screen_Shot_2016-04-07_at_1.32.23_PM](/uploads/7cd344765025e93d0035934a473b4bb3/Screen_Shot_2016-04-07_at_1.32.23_PM.png)

See merge request !3605

app/assets/stylesheets/pages/commit.scss

@@ -20,6 +20,8 @@
   margin: 0;
   padding: 0;
   margin-top: 10px;
+  word-break: normal;
+  white-space: pre-wrap;
 }
 
 .commit-info-row {

app/assets/stylesheets/pages/diff.scss

@@ -109,6 +109,10 @@
         display: table-cell;
       }
     }
+
+    .text-file.diff-wrap-lines table .line_holder td span {
+      white-space: pre-wrap;
+    }
   }
   .image {
     background: #ddd;