HOVER: Theme Engine compatibilities and some resources tweaks

Use default notification dimens, avoid setting a custom one.
A bit of cleanup too.

Notifications:
Hardcode dimensions to android defaults. Avoid themes to change them,
Ribbons feature (present on CM based roms mostly) needs that.

Thanks to +John Xionidis to help me trick this out for full CM11 made themes :)

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: Iccf12061c045c29db4bc73736dac68e52dda198c
Themes: Tests: Hide new private APIs

Add missing @hide
This should have been done in If04e82a13250f520d70b58991586c8ce38f0ecb1 to avoid

/opt/jenkins/android/workspace/android/cm-11.0/out/target/common/obj/PACKAGING/public_api.txt:24102:
error 4: Added public method android.test.mock.MockPackageManager.getThemedResourcesForApplication
/opt/jenkins/android/workspace/android/cm-11.0/out/target/common/obj/PACKAGING/public_api.txt:24103:
error 4: Added public method android.test.mock.MockPackageManager.getThemedResourcesForApplication

Change-Id: Ib40279065c937b130322350c1dbdf5b0b43506e3
PackageManagerService: Prevent sending a SIGKILL while the device shutting down

This avoid potential NPE when cleanup theme related data

Change-Id: Ifc7b5f7a21af32464feb32012336cfbe4b7de2ff
Themes: Set bounds on iconUpon

Change-Id: I90720b87ed6d5c30f342bd0e1c149e8a6e238d6e