Merge pull request #2078 from RosettaCommons/vmullig/refactor_xsd_functions_a_wee_bit
Expose useful XSD-parsing functions in utility, and add a few more
I'm cherry-picking some Rosetta changes from my GUI branch. Note that none of this makes Rosetta aware of the GUI in any way -- these are just utility functions that make it easier for the GUI to get information from the RosettaScripts XSD about the interfaces for movers, filters, etc. It makes sense for them to live in Rosetta since many different pieces of UI and non-UI code may want to use them.