Fix PoI rewards

Managed to screw these up with my latest commit, sorry!
- Fixed a map bug reported at #649 (do this cave even exists?)
- Fixed #640 by adding a stair
- Closed door at {x = 33044, y = 32629, z = 1} ref #647
- Added boss Furyosa.xml (loot still missing) fixes #644
- Merged some dwarves spanws
Merge pull request #651 from EPuncker/master

- Fixed a map bug reported at #649 (do this cave even exists?)
Merge pull request #127 from PrinterLUA/master

fixes and add furyosa