bb gh deploy should move the card to Deployed by


Pull request for [bb gh deploy should move the card to Deployed by](https://trello.com/c/P58rdZLE/1993-bb-gh-deploy-should-move-the-card-to-deployed-by).

I recommend reviewing refactor as a separate commit ;)    
FWIW good practice for passing arb. strings like this: re.search([re.escape(...)](https://docs.python.org/2/library/re.html#re.escape), ...)

(I know in this case problems are very unlikely)