Grooming the cats.

 - Closed up tiny gaps in the vectors
 - Export larger cat PNGs
 - Make it harder to delete cats by accident
 - Properly color the two front/back feet most of the time
   instead of the two left/right

Change-Id: I185bf433d3be004945d6e16387ec928c14376b7a
Fixes: 29922607
Fixes: 30064123
Fixes: 29922111
Fixes: 29922066