Added star argument support for commands

The command parser will now detect stars (*) as arguments and pass them
on through to a command's onRun.

This is useful for commands like /flaggive or /flagtake, because you can
just do /flaggive [name] * to give a character all flags.
Added star argument support for flag commands

Lets you use * in the second argument of either flaggive or flagtake to
represent to all flags.