`fortpy-show-doc` Integration with `fortpy-el`

[rosenbrockc]

The full documentation for a subroutine/function can be called up using M-? in emacs. However, it currently only works for executables that are defined in the same module as the reference that calls it. If you open derivative_structure_generator.f90, go to line 339 and try to call up the docs, you get

deferred error : (error "\"AttributeError(\\\"'NoneType' object has no attribute 'fulldoc'\\\",)\"")

The same thing happens on line 328 for get_spaceGroup. However, on line 481, find_permutation_of_group works since it is defined within the same module.