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.

Change-Id: I2db74193d534b66e1faf20293996c611621dfe58

Conflicts:
	src/com/android/settings/Settings.java
Settings: Don't show protected apps options in restricted profiles.

Change-Id: I38c2e8fd3508d360f0e23703ce6c939f02f3714e
JIRA: 4668
Issue: https://jira.cyanogenmod.org/browse/CYAN-4668

Conflicts:
	src/com/android/settings/applications/ManageApplications.java