Settings: Don't show protected apps options in restricted profiles.

Change-Id: I38c2e8fd3508d360f0e23703ce6c939f02f3714e
JIRA: 4668
Issue: https://jira.cyanogenmod.org/browse/CYAN-4668
Settings: Only show clear button when search field has text.

Change-Id: I69bf6a31a933459be2c652434aec412105395dcc