Updating ActivityIntentResolver so that queryIntents doesn't return protected applications.

Any calls from System UID(0) are not filtered

Change-Id: I037cddaf91b6943b8cc837c5b046cf320c4caa5f
Fix alignment of small tiles

Before fix: https://lh6.googleusercontent.com/_aMa9Ary2dM4eaX2JfSvyVVVT1EL-_J4X9I-8d5Z1zA=w322-h572-no
After fix: https://lh6.googleusercontent.com/-c2G5sUWLmfA/U53SxPccsyI/AAAAAAAAB5A/aD8xNO1TRq4/w322-h572-no/Screenshot_2014-06-15-14-05-48.png

Tested on Hammerhead and I9300

Change-Id: Ifb9b041feb2487ea9eb6db60bf1a7368c5740c15