[NEW] Notify new message in the chat room.

[FIX] Message retain

[IMPROVEMENT] Added project improvements.

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

[FEATURE] DB Spotlight + fixes

[FIX] Fix Reply with attachment

[NEW] Send message with attachments

[IMPROVEMENT] Hindi translation

Better app modularization. Processing the draw image in background as well as handling possible errors.

# Conflicts:
#	app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

merge

[NEW] Android draw

and other fixes

[IMPROVEMENT] Improvements in Russian translation

merge