Prepare for submitting data to geo by:

Prepare for submitting data to geo by:
Adding a new namespace for them.
Creating something to simplify namespace qualified names to short normal names.

Also I implemented an option to import other RDF files.
I made a small attempt to at least partially sanitize strings being loaded
to only include "safe" html.

Most of the changes to test_rdfhelp came because I reindented it to 4 spaces.

Though I did add in tests for the new functions.