added basic birthsign table
added texture column to birthsign table
Implemented levelled items
Don't buy/sell keys which are set to open a lock
Reset the 'owner' field for items that were legitimately bought from an NPC.
Initial container content should inherit the owner of its container
added verifier for birthsign record
Make the getHeadNode method more general
Create a separate vertex buffer for each UV set
Support NIF detail maps
Fix mercenary not updating its profit when item was dragged onto the player avatar
Adjust player position to ground after using travel services
Minor cleanup of NiMorphData
Bugfix #553
Merge remote-tracking branch 'scrawl/master'
Merge remote-tracking branch 'glorf/bugfix-1'
Merge remote-tracking branch 'zini/master' into nifogre

Conflicts:
	components/nifogre/ogrenifloader.cpp
Minor cleanup to loading texture UV coords
Improve particle system placement when no emitters are specified
Fix several NPCs spawning in the ground