fixed tessellation of polygonal path.
edges now have constant width.
added basic polygon construction for highlighting faces
added texture loading
towards skinmanager
Merge branch 'dev' of ssh://infcip-remote.uni-trier.de/home/jaeger/GitRepos/NubuckLEDA3 into dev

Conflicts:
	vs_nubuck/nubuck/nubuck.vcxproj
	vs_nubuck/nubuck/nubuck.vcxproj.filters
added basic texturing
added basic texturing of face rings
improved texturing of face rings
resolved z-fighting of faces and hull
Revert "improved texturing of face rings"

This reverts commit 3c541d43b8a1b24f80ba9606597bd9d39e5d3764.
added subdivision of face rings
draw transparent face rings
tweaked face rings
use different tessellation for polygonal paths
added yet another tessellation for face rings
to have more polygons in the corners
improved tessellation of face rings