converted Deck stats bar graphs to new "class color standards"
change the arena array variable for stats output to something more context-friendly

swapped arena array variable in stats.slim from aa[] to arena_run[] to
make it more clear what is being referenced.
color coded class boxes on arena stats page

individual class stats on Arena stats page now conform to the color
coding standards
Merge pull request #85 from sargonas/master

Multiple class color adjustments