Standardize how IDs are created
Remove GDSClassesMapping dictionaries from bindings.

Talking to @bworrell, these aren't really needed for how we use the bindings,
they are getting out of date with schema updates, and they include MANY
elements which are not valid root elements for a paricular schema. If we
run into problems, we can selectively add items back into this dictionary.

Also standardize line endings throughout the bindings (All DOS except for
terms_of_use_marking.py)