Frameworks: Improve AOSP Download/Upload animation

This increases the number of png required for a full download/upload animation cycle.
These new png makes the animations much smoother.

Change-Id: I7120d757782e797809bc97747127c6a0cc36f2fe
frameworks: Smooth background gradient

Credit to UBER for the images

Change-Id: I3655e9917610348100fa6cb5cede66a63ca82538
Frameworks: Speed Up Default Animations

Change-Id: Ifd710d4e14a8f82d87700d021daa06bcff6b7292