[NEW] Implement save image to gallery

[FIX] Use username when building replies always (update)

[NEW] Forgot password

MessageParser as non-singleton since the server settings changes when
swapping between multiple servers.

[NEW] Add GenericFileAttachment

Merge branch 'new/generic-file-attachment' of github.com:RocketChat/Rocket.Chat.Android into new/generic-file-attachment

[NEW] No chat message shown on empty chat list

[FIX] Use username when building replies always

[NEW] Support to login using Custom OAuth

# Conflicts:
#	app/src/main/res/values-hi-rIN/strings.xml

[FIX]  Show more social account icon not showing

merge

Plus fix file indentation.

[I18N] French translation (new PR)

New PR as the other seemed to be borked