quiethours: fix vibrate option

Change-Id: I4108bdde0fd6745325bf6c6ca99524de7378d5f6
JIRA: CYAN-3731
Issue: https://jira.cyanogenmod.org/browse/CYAN-3731
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge commit 'e2b03d31d22b8692735f7cd03caecf41c73028a4' into android-4.4