Unsupported features in UI

[mjwagner2]

The user interface currently provides "inputs" for several optical properties and interactions that are not supported by coretrace. Specifically, on the optics page, the following are not supported:

• Optical surface number
• Aperture stop..
• Diffraction order
• Refraction indices > Imag
• Grating spacing coefs (all)

The values specified for these may need to be hard-coded in the interface, as I believe they are all still passed to coretrace as function arguments.

The help menu will be updated to remove reference to these per #12.