Option to set Ringer Mode tile mode
Originally comes from CM. However, CM implementation had a big flaw
forgetting about the fact that ringer mode can be set to any mode by
other way (e.g. from settings or volume panel directly) in which case
tile did not indicate the current state correctly since it could
indicate only those modes that were enabled by the option.
Merge branch 'kitkat' of https://github.com/GravityBox/GravityBox.git into kitkat