GitLab

Add conversations persistence to save the history of messages using
Realm and RxRealm libraries

Refactor models to work with Realm :
- Change properties declaration as dynamic vars
- Change Arrays to List
- Change Dictionaries to Objects
- Add default values for non-optionals
- Changed initializers for convenience initializers
- Fixed Tests compilation using @testable import (classes linked twice
exception throwed by Realm)
- Bumped RxSwift version and fixed deprecated methods warning

Change-Id: Ife98e48430740f80ffef9420d857f1ae6e4819d4

Add the search bar on the top of the smartlist and the list of found
results.

Add an other list for search results. This list is splited in 2
sections for filered and found results.

Add "No Conversations" label if there is no conversations

If the contact is not found locally, a new conversation is created

Change-Id: I7985f0644f97063875bfb02159d44dd1aa8b731e

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

Add adapter and service for messages (send, receive and statuses)

Add the smartlist to see the users that sent messages

Add lookup address into NameService to get the user name from the
RingId

Change-Id: I512bfafc7d3e77888a3560a183a085434220337b