Extended users API to support updating and deleting users.

Also added tests.
Don't setuid the repositories on installation
Don't setuid the repositories (Rake checks)
Refactor project creation. Added logout link to profile page
Improve CreateContext call. Fixed test
Fix gitlab:check recommendation

Running the recommendation would give out:
GNU find: paths must precede expression
Fix project creation
Fixed developer push to protected branch. Closes #2647
raise exception if gitolite is broken
Increase Issue description size to 10k. Fixes #2545
Remove link to non-existing page. Fixes #2620
Remove chdir inside runtime. Improved gitolite shell commands
Uncomment forgotten code
Fix common mixup when instlling gems from the installation guide
Fix text on groups#show page
Fix public cloning option text on projects#edit page
Rename help#public_area to help#public_access
Fix public layout
Reorder help routes
Redo help#help_pages partial