Added incoming view controller. Fixed some bugs in audio calls and some in contacts selection.
Added video waiting view controller. Updated video view controller. Added resources.
Header updated.
Updated calls logic.
Fixed bugs in sdk and sample app, that was causing incorrect behaviour during call initialisation.
Fixed some right bar button bugs.
Fixed call hangup bug
Fixed some UI bugs
Merge branch '20131025-federated-cloud-contacts' into private-20131108-robin-federated-cloud-contacts

# By Sergej Jovanovic
# Via Sergej Jovanovic
* 20131025-federated-cloud-contacts:
  Fixed some UI bugs
  Fixed call hangup bug
  Fixed some right bar button bugs.
  Fixed bugs in sdk and sample app, that was causing incorrect behaviour during call initialisation.
  Updated calls logic.
  Header updated.
  Added video waiting view controller. Updated video view controller. Added resources.
  Added incoming view controller. Fixed some bugs in audio calls and some in contacts selection.