pull changes from master to dev on 2014-05-21

This update brings these approved pulls to the dev branch, so they can be tested on dev.buttonweavers.com:
* User-visible:
  * #869: highlight recent action and chat entries
  * #853: hide the form after account creation to reduce confusion
* Not user-visible:
  * #864: load all javascript dynamically in a consistent way, to reduce (not yet eliminate) cache issues
  * #878: fix a couple of brittle QUnit tests

No database updates.