Update a few tutorial messages
Make the windows in the tutorial room curtained
Remove an unused tutorial-related enum
Remove another unused enum from game.h
Remove obsolete/inactive "map legend" stuff
Make indents match surrounding code
Fix swimming encumbrance penalty sign, displayed formula

Closes #1369
Bows are not ever one-handable.

Closes #665.
Fitting screen now shows storage and encumbrance in item columns
Don't decrement iterators pointing at the end of an empty list
Don't recalculate sight range for every tile
Added leather vest item and crafting recipe
Today's small fixes and enhancements.