* upstream/master: (80 commits)
Contributing via GH no longer encouraged.
Update README.md to really fix icon
Update README.md to fix icon
Allow to set request_access_enabled for groups and projects using API
Restrict last_activity_at updates to one per hour
Solve code review comments
Properly support Gitlab::Auth::Result
Revert all changes introduced by https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6043
Move Gitlab::Auth.Result to separate file
Added CHANGELOG
Fix spec failures
Support pushing via SSH
Fix specs failures
Don't leak build tokens in build logs
Fix permissions for creating container images
Fix old CHANGELOG entries
Add linting for duplicate CHANGELOG versions (!6039)
Ensure validation messages are shown within the milestone form
Fix validation regexs (+1 squashed commit) Squashed commits: [f9a9315] Use : to test invalid environment name
Fix scope of the CI config key nodes in jobs entry
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