mGerrit: add Google Now style animation

This rotates and moves the cards into view from
the left and rotates 45 degrees counter clockwise
while moving

Patch Set 2:
  +Fix crashing diff log. Still failing to get returns
    from any gerrit instance except Gerrit-Review :(

Change-Id: I011d74745b7451fa79b92335fd7d84f0dba6809d
Merge "mGerrit: add Google Now style animation"