+other sizes
Merge branch 'master' of git://github.com/peterix/stonesense.git
Varied pebbles & boulders, driftwood from DarkTundra. Restricted block_walls to inorganic blocks only.
Merge branch 'master' of git://github.com/peterix/stonesense.git

Conflicts:
	resources/terrain/Walls.xml
	resources/terrain/block_walls.xml
Track_Ramps_128.png is too heavy, disabled it for now, and switched to pixel-versions.
Moved colors.xml into relevant folder (and made ice color lighter).
Fixed few minor xml-bugs.
Non-transparent ice tiles from DarkTundra subset.
Merge https://github.com/8Z/stonesense