testing xml:id reassignments.
Merge branch 'master' of github.com:paddymcall/SARIT
Added xml:id-s on TEI and text elements.

The idea is as follows:

1) On TEI elements, prepend "sarit__", then add the id you want. This xml:id should be unique within the SARIT collection.

2) On the text elements, set the id without this prefix.

I also dropped the -dn and -roman affixes for the text elements, since only the top level TEI elements need to be differentiated from each other.