Update Play Services 11.2.2 -> 11.4.0, FirebaseUi 2.3.0 -> 2.4.0
Update Play Services 11.2.2 -> 11.4.0, FirebaseUi 2.3.0 -> 2.4.0

squanchy-dev/squanchy-android,squanchy-dev/squanchy-android,squanchy-dev/squanchy-android