Fixed CSS issue with search bar

[mathieuboniface]

The search bar is displayed under navigation bar. This fix replace the search bar into the navigation bar.

Now :

With this PR :

[coveralls]

Coverage remained the same at 99.61% when pulling ed01056 on mathieuboniface:FIXED_SEARCH_BAR_CSS into 001a0b7 on drrb:master.

[coveralls]

Coverage remained the same at 99.61% when pulling ed01056 on mathieuboniface:FIXED_SEARCH_BAR_CSS into 001a0b7 on drrb:master.

[coveralls]

Coverage remained the same at 99.61% when pulling ed01056 on mathieuboniface:FIXED_SEARCH_BAR_CSS into 001a0b7 on drrb:master.

[coveralls]

Coverage remained the same at 99.61% when pulling ed01056 on mathieuboniface:FIXED_SEARCH_BAR_CSS into 001a0b7 on drrb:master.