terrain prototype
terrain texture coords
property widgets refactored
property widgets refactored even more
merge from trunk
physical heightfield - WIP
removed network communication in the editor
physical heightfield
terrain layer; editor properties fixed
(de)serialize terrains
heightmaps using texture resources
heightmap is not saved/loaded twice
master merged
Merge pull request #200 from nem0/terrain

Terrain
property widget using QTreeWidget
update according to review
Merge pull request #213 from nem0/properties

property widget using QTreeWidget
merge from master