change queryConceptsAlphabetical to use property-specifix text index. queryConcepts still broken (only finds prefLabels)
fix queryConcepts to use text index with separate fields
rewrote jena-text support so that the text index is used for all queries. Fixes #55
fix SPARQL syntax issues that broke unit tests for generic SPARQL 1.1
Merge branch 'master' into all-jena-text-issue-55