Clean up on all of our commands. Abstracted experience commands and
hardcore commands. Moved lots of duplicated code to functions in
CommandUtils.java. Split /ptp into individual commands, just like /party.
Used ternary logic to simplify some of our /skillname stat displays. Fixed
skill guide to not allow for negative pages. Simplified logic for many
/skillname data calculations. Use permission checks to prevent calculating
data that will never be displayed. Made the skill guide into its own
command.