Merge pull request #227 from jrconlin/dev

Issues #224, #226, DB update work. …
Merge pull request #228 from jrconlin/dev

Fix meta column reference
Update to comment on default branch shift

tl;dr: dev is the new default. Master is still the most stable.
Merge pull request #231 from jrconlin/dev

Issue #223, Add UserID to debug output
Remove device if erased.

* page refresh required before UI will no longer show current device
Merge branch 'dev' of github.com:mozilla-services/FindMyDevice into dev