Removed top-bar background from links in .has-form block

Screen before changes:
![before](https://f.cloud.github.com/assets/615667/1655095/9def1954-5b5b-11e3-936c-4d74179fa0d3.png)
Screen after changes:
![after](https://f.cloud.github.com/assets/615667/1655098/ab9cd08c-5b5b-11e3-8420-2cb522d241ef.png)