Merge pull request #16 from wushin/master

Cave Release fixes
Update license file for Nami's graphics, since he agreed to dual licensing.
Merge pull request #17 from wushin/master

Fixed Collision Tiles on 043-1
snow docks changes
snow docks in nivalis, minor related fixes
layer and collision tile fixes for 031-1.tmx snowdocks
031-1:

	* moved all x1 tiles from Fringe to Ground2/3
	* fixed collision at 99,124 by inserting a stone
	* fixed some minor overlapping issues
Update minimap of 031-1 due to the addition of snow docks by Wombat.
Add snow docks graphic to license file.
Update license file:

- add Wombat, Lien and FotherJ as author to some graphics
- put CC BY-SA 3.0 to graphics done by Wombat
Fix spelling error.
Fix mapping error on 009-3.

http://forums.themanaworld.org/viewtopic.php?p=136069#p136069
027-1:

	* move all x1 tiles from Fringe to Ground2/3.
	* fixed the issue with the track at 69,100 reported by straelyn.
	* cleaned up the layers.
	* collision fix at:
		- 96,93
		- 26,62 to 30,62
		- 50,76