Android: added ApplicationState capability.

The application state is tied to the QtActivity lifecycle.
Mapping of states between Android and Qt is as follows:
 onResume --> ApplicationActive
 onPause  --> ApplicationInactive
 onStop   --> ApplicationSuspended

Change-Id: Iefef08d6c7a7fde28fba1f4886882458cda6a0c0
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Remove Maliit input context.

Maliit upstream has its own IC which is more advanced than this one, as well as
being supported.

Change-Id: I4b820fc7f39468e53c113699c4c43c75d490f65b
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Jan Arne Petersen <jan.petersen@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Reviewed-by: Pekka Vuorela <pvuorela@iki.fi>