Define a CLOS-like 'around' modifier as a decorator, to neaten up the 'orig_*' noise of wrapping the setUp()/tearDown() methods

Allow a TestCase to set a 'loglevel' attribute, which overrides the logging level while that testcase runs

Have all unit tests import from our own subclass of trial's unittest TestCase; set up logging in ONE PLACE ONLY

Conflicts:
	webclient/room/room-controller.js

Send multiple candidates at once instead of all individually. Changes spec to include multiple candidates in a candidate(s) message.

Fix bug where we relied on the current_state_events being updated when we are handling type specific persistence

Fix bug where we incorrectly removed a remote host from the list of hosts in a room when any user from that host left that room even if they weren't the last user from that host in that room

Put data into a table to ease layout and manage long strings

Always pick the incoming call if we've not yet sent out our invite, otherwise the remorte party will see their call get rejected and our call won't come in until our user clicks allow.

Remove the local AV stream from ourselves when handing it off to a new call or we'll close it when we hang up.