Re-enable World7
Destroy flammable tiles ignited by dragons.
Fix dragons being visible from inside buildings.

Some other glitches instead, but much less obvious.
Tweak dragon pathfinding to actually aim for the player.
Merge branch 'master' of https://github.com/BinkyToo/CCDQuest
Unify and tidy HUD splash-screen code.
Remove hideous world-changing copypasta.

Also remove leftover debugging output.
Use centrally-defined directions for player movement.
Move map definitions to map/maps.json
Put rendervisibletiles() call back, it's needed.
Merge pull request #25 from FLHerne/master

Misc tweaks