Render builds/not_found and repo/not_found in the next runloop run

This is done to make sure that if something else render just after
not_found, not_found will still be rendered.
Update lib8 and rubyracer
Display repos with no builds, but which are active in 'My repositories'

When user activates a repository in the profile page, we now will
display this repository on the 'My Repositories' list. When user chooses
this repository, she will see an explenation why there is no builds and
what could be done to fix this.

Conflicts:
	assets/scripts/app/controllers.coffee
	assets/scripts/app/models/repo.coffee
	assets/scripts/app/templates/repos/list.hbs
Merge branch 'show-active-repos'