Merge pull request #300 from jaoo/1087068

Bug 1087068 - [Loop] Long latency from the call is established to the 1st remote video is rendered. r=borjasalguero
(cherry picked from commit b129be95682d7c2f751cd93a2bd8c53c525cc075)
Merge pull request #336 from jaoo/1083760

Bug 1083760 - [Loop] Doesn't always clear the "Connecting" display (mainly audio-only calls?). r=borjasalguero
(cherry picked from commit 8d4512eaf8c6ddc78f6a0484846e80678ca90296)