Gitlab: allow codebase arg
Update docs and unit tests for the gitlab change
Merge jaredgrubb/buildbot:gitlab-allow-codebase (PR #1092)
tweak docs
autopep8
added force mode issue #956 on buildbot tracker
updated unit test and documentation for #1097
Merge varunsharma/buildbot:master (PR #1097)

+autopep8
Merge branch 'master' into nine

Conflicts:
	master/buildbot/status/mail.py