Disable settings search on all subactivities.

This leaves the search in place in multi-pane configurations, and keeps
it only in the main settings screen for single-pane configurations.

Conflicts:
	src/com/android/settings/Settings.java

Change-Id: I94d861453a1017731fbdc6d853e448e369358734
Merge "Disable settings search on all subactivities." into kitkat3