Start ripping out ncurses

[JohnathonNow]

Addresses #171.

The following files still incorrectly depend on ncurses:

ui/gui.c
ui/key.c
ui/colors.c
core/controls.h
core/demo.c
logic/item.h
logic/enemy.h
logic/item.c
logic/enemy_rulebook.h
world/floor.c
world/map.c