Merge branch 'fix_horizontal_overflow_in_code_tag' into 'master'

Fix horizontal overflow that occurs in the code tag

closes #14167 

### Before Fix
![Screen_Shot_2016-03-16_at_9.10.52_PM](/uploads/b4a282ffc33684983d7e2482b8e13a8f/Screen_Shot_2016-03-16_at_9.10.52_PM.png)

### After Fix
![Screen_Shot_2016-03-16_at_9.11.16_PM](/uploads/8acca3b46bfdbd929cc096ad070022e2/Screen_Shot_2016-03-16_at_9.11.16_PM.png)


See merge request !3255

app/assets/stylesheets/pages/notes.scss

@@ -108,6 +108,13 @@ ul.notes {
         word-wrap: break-word;
         @include md-typography;
 
+        // On diffs code should wrap nicely and not overflow
+        pre {
+          code {
+            white-space: pre-wrap;
+          }
+        }
+
         // Reset ul style types since we're nested inside a ul already
         & > ul {
           list-style-type: disc;