VegBank

includes test of preassigned XML

works on aldo, but denorms broke when we got to them. Not sure how to get around that. Email didn't get to me, either way, yet.

preassigned accession codes required a few tweaks to LoadTree... and AccessionGen.

These are now tested and work ok. Crux of the issue was the LoadTree let incoming accessionCodes in if they were found in the preassignedaccessionCode table, but the datasetitems were not created with those accessionCodes, instead, it was still creating bogus accessioncodes for the datasetitems.

This fixed, but requires another db lookup = slower.

Original Bugzilla ID was 2539