Fabulator XML functions on github

I created a github repository for the XML extensions to Fabulator.  This is the first step towards a set of general purpose functions for managing TEI documents.  With this and recent changes to the core Fabulator Radiant extension, we can browse TEI documents in the CMS and extract information from within the document.

These two functions move us much closer to being able to extract geographic information from documents for use in the Digital Concord project.