Remove duplication and link to CentOS guide.
Update gitlab-grit
Replace gif animation with font icon spinner

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve turbolink spinner

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
 Merge branch 'remove_ajax_gif' into 'master'

Remove Ajax Gif
 Merge branch 'update_gitlab_grit' into 'master'

Update gitlab-grit
 Merge branch 'link-to-recipies' into 'master'

Link To Recipies

People can't find the CentOS / RHEL guide. Now that it follows the official guide I think we can link to it.
Better color for nav links

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Headers have ids and link to their own id.