Build 59: tons of fixes, prototype sector tool

fixed spawned-but-invisible crafted item being interactive before you crafted it

special journal page for maps with no monsters eg doom2 map30

made BossBrains taller so they're easier to speak to

fixed crash in maps with no objects or monsters

fixed possible crash with quest screen page index, might also fix an unresponsive UI softlock

first pass help screen

placeholder title pic

prototype "sector tool" that lets you raise and lower floor and ceiling heights

reduce mouse sensitivity in X axis

on non-widescreen resolutions, don't show side HUD icons when other UI is up

add the last few missing vanilla doom object names and descriptions (nonsolid variants of gore objects)

fixed possible DeadLostSoul crash in e2m5