don't use uncessary regex
Make sure the internal Salt ID produced by the SaltAnnotateExtractor has exactly the same form (trailing slash, only referering to documents but not the document graph) as the external form used by the service.

Otherwise simple function calls to SDocumentGraph#getSNode(id) won't work as expected
fix the automatic query generation

In the current version the QueryData was not setup properly and it failed on every corpus that did not have it's own example queries.