framework: port IME selector notification toggle (2/2)

Change-Id: Ia35960d88468dba44cdfad26c7cc74f811a6844f

Conflicts:
	core/res/res/values/symbols.xml

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/config.xml

Conflicts:
	core/res/res/values/config.xml
	core/res/res/values/custom_symbols.xml
framework: fix 'port IME selector notification toggle'

Change-Id: I7801cc9edc2341c447e2c3eafd9344216eb6c0c6