Wraith

Adds boss monster in the likes of the Jabberwock and the Sludge crawler
Removed sundeath from wraiths
Fixed the missing value in savegame.h
Merge branch 'master' into Wraith
Rookie errors

Fixes three errors that I found
Tweaks the Spawn and behavior of the Wraith

It now spawns in the cult cabin first floor, also I gave it sundeath and
removed its ability to follow you so you could kill it by opening all
the windows of the main room to let light in
Remove needless redundancy
Merge the wraith.

Conflicts:
	src/disease.cpp
	src/map.cpp
	src/mapgen.cpp
	src/mapgen_functions.cpp
	src/monattack.cpp
	src/mtype.h
	src/player.cpp