Update git submodules
- Update skins/MonoBook from branch 'REL1_39' to fcbd028b841f8a8fc4f7ee2dcc079aca67b6ddf0
- Re-add support for "New user message" notification
This is a follow-up to pre-abe94aa4082dbc4f8b9060528a1b4fea2d0af0f1
Bug: T330503 Change-Id: I2416df717166cb8c32e8016631f41ff9d635c0b6 (cherry picked from commit 23bc48d06180790856e337adb03f6a61878247fa)
- Re-add support for "New user message" notification