PEEK: configurable pickup timeout (1/2)

- Allow the user to set different pickup timeout when a notification comes up through PEEK.
Options:
10 sec (default)
30 sec
45 sec
1 min
2 min

Change-Id: I82650f376b1dee81b5872317c70506d580361d49
Signed-off-by: anerikg <anerikgames@gmail.com>

Conflicts:
	res/values/cr_arrays.xml
	res/values/cr_strings.xml
	res/xml/lockscreen_notifications.xml
	src/com/android/settings/crdroid/LockscreenNotifications.java