WIP: Separate transforms from basis

[cortner]

• [ ] implement both options (transform in basis, separate)
• [ ] test compatibility
• [ ] remove the old version
• [ ] implement prototype frules to propagate gradients

[cortner]

After experimenting it is becoming clear that this was a poor choice. The structure should be:

• inner basis, e.g., ( J = T * P(t(x)) )
• B1pComponent(J) wraps it including the StateTransform that extracts how the state feeds into J. This is a logical separation since the state transform is really part of the wrapper, while the distance transform t(x) is really about the definition of the radial basis.

[cortner]

I'm merging because it contains some cleanup, but the main change proposed here is rejected.