moved .gitignore up out of the groovy source root, so it won't get through packaging
narrowed the generated set icons by 20px and made them 5px shorter, simplifying the internal structure a bit as well
changed the set icon backgrounds to be gradient fills, instead of solid colors
lightened the bar texture a bit
scooted the power/toughness over to the left a little.  it's not actually centered anymore, but because of the shadowing/glow it looks better.