Conflicts:
	config.js
	libs/strophe/strophe.jingle.session.js
	rtp_sts.js

Updates strophe to use a patch that handles only result and error responses when an iq is send (https://github.com/strophe/strophejs/pull/95). Fixes a problem with openfire sending us iq packages with id which we have already used.

Conflicts:
	libs/colibri/colibri.focus.js
	videolayout.js

add nack pli

try audio-only when GUM fails

simulcastlayerschanged/ing should run if lastN is disabled.

Conflicts:
	index.html
	muc.js
	videolayout.js

Detects focus user in reliable way(through user real JID). Fixes kicked event when both 307 and 110 status codes are received in MUC presence.