Fix postgresql jar version for JRE 1.6
Include tomcat jdbc jar
Remove unique property from GroupNav.hbm in taxonId field
Create new collection in Taxon entity to match custom header fields with
properties
Fix ancestorTaxonId field name and type
Add optional option 'insert-only' to indexer tool. The functionality
only works for taxonomy
Fix ancestorTaxon relation
Improve error message during taxonomy import