Merge pull request #819 from pculture/gh-816

fixed #816 invalid attr version.language
unneeded wait
no wait for title
remove title log on tearDown
updated docker config
Commit database transactions after finishing a celery task
Merge pull request #828 from pculture/gh-822

Commit database transactions after finishing a celery task
Merge remote-tracking branch 'origin/staging' into production