* minor whitespace fix in mainwindow.cpp

* MultiIndexedGeometry index type is now 32 bit to allow for larger meshes
* MultiIndexedGeometry::generateVertexNormals() can now automatically generate normals for a GL_TRIANGLES topology

The ProxyGeometryGenerator now correctly generates oriented geometry for
volumes with arbitrary poses by directly using the TextureToWorld matrix
to transform the bounding box instead of just transforming the bounds.

refs #386

refs #386

* Introducing virtual GeometryData::hasTextureCoordinates()
* Introducing virtual GeometryData::applyTransformationToVertices()

* Implemented GeometryDataFactory::createCube() normal generation

* Introducing MultiIndexedGeometry data type
* Introducing GeometryDataFactory::createTeapot()

* Moving to Apache 2.0 license
* Updated AUTHORS.txt

Cleaned up and slightly revised GeometryData API. Cleared the way for non-value semantics. Introducing GeometryDataFactory, a collection of static methods to create standard geometric primitives.