Map editor

The map editor in its most complete form as of 02/11/14. Everything
except tile changing via drop down selection and sheet changing are
implemented.

Some bugs have been cleared up, such as Staven's mysterious "only
crashes when not in the debugger" error (really a size mismatch on
fwrite!)

util_textInput works now. 99% to a completed text input on menu system.

TODO: Player characters!