Added visibility_level icons to project view (rather than just text).
Added public projects to search results.
Added ability to restrict visibility levels standard users can set.

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

* Hooks and team pages allowed only for masters/owners
* Group page allowed for admin
* Corrent authentication for Projects controller
* Hide some project elements from visitor

* Render right layout depends on current_user
* show sample git username/email when repo is empty
* Show extra info when browsing public area
* Fixed some tests related to public projects
* show comments in read-only for public projects
* Remove old public routing

update jquery-atwho-rails to v0.3.0

add autocomplete_source action to project for gfm autocomplete

move init_autocomplete layout from head_panel to project_resource

Because not autoloading lib directory at development mode.

Fix using context of Projects::UpdateContext (in admin section error, in public section - to next step if moving controlers)

Get rid of skipping callbacks in production code. Dont trigger gitolite more than once on import in group

Removed unused Raphael.fn.popup

Centralized keyboard and drag events for BranchGraph

Rewrite and improve git backend logic. Fix project movind. Raise exception to prevent unexpected issues