add nack pli
Removes the chrome check. Fixes some minor firefox compatibility issues.
Don't add the x-goog-conference flag if there are no simulcast senders
Fixes firefox issues. The firefox video is displayed in chrome.
Fixes the issue with not receiving video in chrome from firefox when trickle is enabled.
Fixes the issue with the chrome video that is not displayed in firefox.
Implements workaround for the issues in firefox nightly.
Removes the "src" attribute dependancies. Fixes the issues with not displaying the large video and thumbnails clicking not working on firefox.
Removes browser checks. Optimizes the browser specific code.
try audio-only when GUM fails
Fixes issues when participant leaves caused by removing src dependancies. Stops the tracks when stream is removed.
Merge branch 'master' into firefox

Conflicts:
	app.js
	libs/strophe/strophe.jingle.adapter.js
	simulcast.js
	videolayout.js
Fixes issues caused by the merge with master. Fixes the simulcast conferences on chrome.
Fixes the issue with the large video that doesn't fill the large video container.
Adds a side panel toggler, settings menu, avatars, uuids.
Fixes a bug with avatar when no id or email is sent with presence.
Fixes a bug when there is no active speaker currently.
Modifies the avatars, lastN and adaptive lastN handling so that they play nicely together.
Focus and debug changes
Send media presence after session-accept.