Checkboxes like generate_cmake should grey out options that require them to be checked

[KeyWorksRW]

Description:

If the C++ generate_cmake checkbox is unchecked, then the cmake_file option should be grayed out. It's confusing to enter in a filename only to have no .cmake file ever written because one forgot to check the box to generate it.

It's worth looking at other properties that require an option to be checked before they can be used.