Updates to "/apocrpg repair" and "/apocrpg repair all".  "repair all"
does not yet affect worn items.  Also, the cost of repair is determined
by the percentage damage times the cost of repair (500).  So, if an item
is 1% damaged, the cost will be 5 economy.  If an item is 99% damaged,
the cost will be 495 economy.
Added functionality for "/apocrpg repair" and "/apocrpg repair all".