[gitlab:check] Fix detecting the status of sidekiq

If you are running another sidekiq instance on your server, e.g. GitLab
CI, the check script would parse the output of `ps aux` searching for
`sidekiq` and returning success, although the GitLab sidekiq may not be
running.

Now the `ps` call will only print the processes run by the GitLab user.

Conflicts:
	app/controllers/projects/merge_requests_controller.rb

Fixed grammatical mistake in init.d status output.

"its" not "it's".

Add sleep in tests to prevent random failing when next test starts before ajax requests for old one in progress

Before we have only owner_id to determine group owner
With multiple owners per group we should get rid of owner_id in group.
So from now @group.owner will always be nil but
@group.owners return an actual array of users who can admin this group

Conflicts:
	lib/tasks/gitlab/check.rake

PivotalTracker Source Commits Endpoint

Added search for projects by name to api

Remove -y option when removing ruby1.8

* 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