Messages: Add messages screen to read messages and reply
Add MVVM, services and adpater to receive and reply to messages This allows to read received messages from other users and reply to them. The messages screen uses a TableView that scroll automatically to the bottom if the user a new message is received. Messages bubbles are made with simple cells with a label that move to the right or the left. Change-Id: I1b6bd6fd36b88daab9d39cb5745d1ed953868ead