Track our ContactsProvider

Change-Id: I2d168c27c701ba4bd00cd863fe79b13aae45b056
Track OmniRom PackageInstaller and Slims DownloadProvider

PS3: Remove ContactsProvider again as Andros changed it on GH already.
PS4: Added SlimRoms DownloadProvider as Tylar whished.
Change-Id: Ifc6fb60e512522e00b64128ef6d6f0aa1fc07ff7
Track our own Gallery2

Change-Id: I3d22d4168ccc22fe431e2ed4af12c4ca21d019cc
Merge remote-tracking branch 'upstream/kk' into kk