Log when creating database from scratch
Merge pull request #1379 from djmitche/log-empty-db

Log when creating database from scratch
Adapt docker tests (follow-up of PR-1366)
Merge pull request #1381 from benallard/docker_tests

Adapt docker tests (follow-up of PR-1366)
Enforce Property name and source as unicode or ascii string
Merge benallard/buildbot:properties_unicode (PR #1382)
Fix ordering of buildslave and builder reconfig
fix pyflakes