On-The-Spot: Add Gif support

Now features can be explained in yummy animated goodness

GifView supports adding gifs programmatically or via xml using custom:gif=""

Change-Id: Ic1e383c11eb6b8a7a2200470fa31bb28dfc304f7
Update the volume panel color to match Hover

The volume panel slides in from the top currently making it look similar to Hove
r. As both the elements slide down from the top, there should be consistency in
terms of design.

Change-Id: Ifa4439f593b390014a3efb672bc2d00eef6fb869
Update Pie QS Icons

The current pie icons are pretty outdated and neither are they available in XXHDPI resolution. This change adds new icons in all resolutions.

Change-Id: I44d777e2976fb00b3b775ecf554fe5e0754c7197
Merge "Update Pie QS Icons" into kitkat
SystemUI: Do not use null value animators

This commit ensures that any null value animators that are
passed out from the transition generator are handled properly.

Relates to 'Make sure AnimatorSet avoids null animations'
(change id Icfd751b1abceccf7f1177680b86d30610471810e)

Change-Id: I04357e33cfe293c2a1329a7033a5acb53bfb5c85
Merge "On-The-Spot: Add Gif support" into kitkat
Merge remote-tracking branch 'Upstream/kitkat' into aospaG