Update to orientdb 1.7.5
[NX-542] Update capabilities support-zip support to export the database.
[NX-542] Add backup/export and export/import functions.  Update capabilities support-zip support to export the database.
[NX-542] Implement suport to restore database if standard export file exists.
[NX-542] Add export and restore options to manager
[NX-519] Add simple encrypted rid obfuscator.  Add basic tests for hex and encrypted obfuscators.
[NX-518] Convert capabilities to document-api and use database manager.
[NX-518] initial database manager facade, to simplify access to document database connections and pools