Reworking the status bar battery and signal icons

It was stupidly huge, and I didnt realize it until now.  This
new theme will make battery indicator look similar to the signal
bars, but without the vertical separations.  This is taken from
JKays battery themes.

PS2:  Flipped all signal bar images to match the battery images

PS3:  Added full 100-step, smooth battery charge animation. This
      is experimental, and might need tweaked before its merged

PS4:  Optimized all images

PS5:  Resized all non-charging battery icons, 30x30 -> 38x38,
      and fixed broken signal icons (signal without data)

PS6:  Switched to round MIUI battery icons (correct size).  The
      charging animation still has yet to be swapped over to the
      new icons, but that will come in a day or two

PS7:  Switched over the icons for the charging animation and
      updated the charging xml

PS8:  Oops, forgot a few numbers in the charging xml

PS9:  Playing with speed values.  This should be good for now

Change-Id: Ie3080eefd2b1c3fe9e2a9ce6b657251b86fc0859