dev lab: Start on mapping tutorial.
move bookstand to event layer.
It's a trap!
correct warp for mapping dev lab.
Merge remote-tracking branch 'mainline/master' into devlab

Conflicts:
	mods/devlab/maps/lab_basic.txt
	tiled/devlab/lab_basic.tmx
Reorder equipment slots in inventory file for correct keyboard access.
Merge remote-tracking branch 'mainline/master' into devlab
dev lab: fix grammar
Merge remote-tracking branch 'mainline/master' into devlab
Add more portraits.

Still missing @dorkster and @penommi
However once we have more tutorials (items, enemies, etc), we should
have just one developer leading you through one tutorial.
Now all of us are prancing around in the mapping part of the devlab.
Correct paths of npcs to be full paths
Add no alpha versions of the programmer npc
Fix map warps to contain full paths
Fixes to the devlab mapping tutorial.

* a typo
* adapt the map to the new engine, so no warnings are thrown.
Flip bjorn and stefan horizontally, so the portraits align better to the conversation
Merge pull request #304 from stefanbeller/devlab

Devlab: Start working on explanation of how mapping works.