Base: Add check icon to submit buttons
Base: Add check icon to submit buttons

This was done to fix the button on Android devices. The text was being
wrapped otherwise.

OpenSprinkler/OpenSprinkler-App,OpenSprinkler/OpenSprinkler-App,PeteBa/OpenSprinkler-App,OpenSprinkler/OpenSprinkler-App,PeteBa/OpenSprinkler-App,PeteBa/OpenSprinkler-App