Simplify the contributing process and introduce MRO's.
Small edit.
Change IRC to official
 Merge branch 'merge-request-officer' into 'master'

Merge Request Officer
 Merge branch 'irc_update' into 'master'

Update status of IRC in PROCESS doc

Just a small fix to update the official status of the IRC channel in the PROCESS.md doc.
Officially supported irc might cause people to expect too much.
 Merge branch 'irc-status' into 'master'

Irc status
More info about GitLab integrations with OAuth

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'master' of dev.gitlab.org:gitlab/gitlabhq