Prize changes

Description code removed, some balancing of player, correction of
attacking/AC math (which makes sea devils much weaker), and changes to
the messages to remove references to guns since you can't have any.
Fix spice, stair keys

Fixed the bug of spice acting up when you changed levels, and fixed
stairs to only work when you press the right button instead of < and >
both working for any stair direction.
Status colour, min damage, slower HP, focus fix,..

Final fixes for prize entry, which include colour to indicate HP and
nutrition, minimum damage of 1 to avoid negative damage, Hp regen on
every second turn instead of every turn, controls work when you lose and
regain focus, quotes deleted, difficulty tweak.