Removed old adapter models and textures.
"Fixed" aluminium density, added surface thickness correction and utility parts calculations
Cost is corrected to reflect different surface thickness. Removed docking stack node.
Added resizable utility parts: DockingPortS2, RadialAdapters, StationHub.

Closes #44
Added ProceduralAdapter model and part. #46
Fixed #59
Added utility classes: State<T>, Basis, Triangle, Quad. Moved UpdateAttachedPartPos to PartExtensions.

Also fixes #47
Moved Triangle and Quad to Utils. Moved mesh generation to WriteTo method.

Also added SurfaceArea, GetTangentalBasis and NewSurfacePosition methods
to simplify calculations in ProceduralAdapter.
Moved updateAttachedPartPos to Utils. Fixed #65
Using State<TruncatedCone> to keep track of mesh parameters.

Added mass recalculation to GetInfo.
Fixed recalculation of stack nodes position and surface nodes
orientation.
Fixed mass display.

Closes #46
Added TruncatedCone.cs
Added KSPAPIExtensions.dll
Changed some TechTree nodes and scale-aspect values
Correction for surface thickness and aluminium dencity