Merge branch 'master' into non-interactive-aws-install

Conflicts:
	doc/installation.md

Fix merge mess in installation.md

Simplified gitolite handle logic
Stubn over monkeypatch
Stub only specific methods in Gitlab:Gitolite
Moved grach auth to lib
added specs for keys observer
removes SshKey role

* Grit gem updated
* gitolite-client updated
* logger added
* few fixes

Rake task to provider full repo access for gitolite-owner.\n  Automerge requires gitlab user be able to push to any repo

ProtectedBranches model, Master permission for repo\n Allow push to protected branch for masters only

Users with many projects (>100) will hit the 20 second timeout when
updating the gitolite config. This fix batches those changes into a
signle update to the file, causing an order of magnitude speed increase
which finishes well below the 20 second timeout.

Fixes gitlabhq/gitlabhq#220