Ignore the proprietary folder again. These apps must be downloaded seperately.

Change-Id: I0a1ea529ae7676a4b8f6cae1a51b8d2069cc562b
Added BetterBatteryStats to the custom app / proprietary build.

Change-Id: I927433037b2d8224282e271367d0edbbe6834372
Removed proprietary files from project.

Change-Id: I11de5c448e376cb5b41e14d1a5a12e2d1ab037f2