HALO: new drawables for hdpi and mdpi

- scaled down the xhdpi drawables properly for hdpi and mdpi
- removed some old and unused halo pngs
Merge pull request #23 from tonyp/jellybean

HALO: new drawables for hdpi and mdpi
Lock screen: Hide initial pages hints feature (1/2)
-Port and adapt of hide hints for initial page AOKP's idea (Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>).
 Option stored in lock screen settings.
-Moved last brightness strings in brightness section and fixed some code alignment.
Fix incorrect fragment animation used for hiding fragments
Mirror of support lib patch
https://android-review.googlesource.com/#/c/60032/ into
frameworks/base.

AOSP Commit: https://android-review.googlesource.com/#/c/60167/
Merge branch 'jellybean' of github.com:ParanoidAndroid/android_frameworks_base into jellybean-legacy