Merge branch '703-locked-files-container' into 'master'

Set no container on locked files sub nav

Closes #703 

![Screen_Shot_2016-06-21_at_12.44.27_PM](/uploads/5e95a838256650d07260ea2639e3a302/Screen_Shot_2016-06-21_at_12.44.27_PM.png)

cc @dzaporozhets 

See merge request !492

app/views/projects/path_locks/index.html.haml

+- @no_container = true
 - page_title "File Locks"
 = render "projects/commits/head"