FIX: displayErrors is undefined in flags.js controller
FIX: Don't track pageView on initial load. Let the router signal that.
Copy: Change {x} new topics -> {x} new posts
Merge pull request #2373 from riking/patch-2

Copy: Change {x} new topics -> {x} new posts
Username length is now minimum 20
Add Google Oauth2 authenticator. The current Google OpenID authentication has been deprecated by Google and will NOT work for any new websites.
* Increase pool size to allow for a few extra bg threads in sidekiq
Annotate models
BUGFIX: improve error messages for invalid API keys
BUGFIX: don't track last seen for message bus
FIX broken spec
Add link to google config instructions. Fix dashboard warning for google oauth2.