Merge changes I5ed0feb5,I33faa3c8,Id2ee2e55,Iad0d4e94,I3ae5e544

* changes:
  Revert "Rotate IMEs (subtypes) by Meta+Space."
  Revert "Show toast when subtype is rotated by Meta-Space."
  Revert "Shift+Meta+Space should reverse-rotate subtypes."
  Revert "Shift+Meta+Space should reverse-rotate subtypes part 2."
  Revert "Make sure that Toast is always shown by Meta-Space."