Settings: Skip apps where the LED's already set up

The Settings app should not have shown a package in the "Choose
application" dialog if it was already configured with custom
notification lights since it just introduces confusion

Change-Id: Ib64fc3733601a5a5c3e61068b376f82b5f4720ae
Apps: Add blacklist interface [2/2]

Now with 100% more hidden checkboxes

Signed-off-by: Evan Anderson <evan@thelinuxman.us>
Change-Id: Ied375cfe2ff6494c25acb9d80b19e824daed755d