- got rid of xsd library

Upgraded xercesImpl to 2.11.0, mysql to 5.1.28, postgres to 9.3-1100, Jena to 2.9.0, OWL API to 3.4.8, HermiT to 1.3.8

- all logging through slf4j
- all command-line parameters through commons cli, duly tested

- added prefix stored in server

- suppressed any trace of log4j

- Implemented transactions in database store (server)

- cleaned up