Q-municate - IM & video calls

Apr 25, 2018

- added support for cross platform calls with iOS

- fixed call screen isn't closed when user tries to end incoming call
- fixed when the user sets image avatar from the camera app either crash or image is not set as an avatar
- fixes App crash for user if he opened app without internet connection and turns on internet connection
- fixed restore session when was logged in via Firebase
- minor bugs fixes