[IMPROVEMENT] Choose default skin tone for emoji

[IMPROVEMENT] Connecting view at top of the chat list

[FIX] Custom OAuth url

[IMPROVEMENT] Flat layout structure in message_list.xml

merge

[NEW] Notify new message in the chat room.

[FIX] Message retain

[IMPROVEMENT] Added project improvements.

The authorizePath can include the host itself, so before concacting the host with the authorizePath check if the host is already present in the authorizePath.

Merge branch 'develop' of github.com:RocketChat/Rocket.Chat.Android into improvement/draw-and-app-modularization

Merge

[FEATURE] DB Spotlight + fixes