various bug fixes and feature additions

• handle issues with the drop option on Doctrine 2.4 in the InitDoctrineDbalCommand #278
• fixed bug in CachedClient::getNodeTypes() related to filtering by node type #279
• also cache queries, remove redundant code, refactor for better efficiency when nodes are not cached #280
• fixed Argument 1 passed to Jackalope\Transport\DoctrineDBAL\Client::setNamespaces() must be of the type array, object given #291
• use autoloading for PHPCR-API tests #288
• implement getting the definition of a node #296
• fix binary copy #299
• fix issues with deleting of references #293
• allow property name to be escaped #300
• make it possible to create and reference nodes within a single transaction #292

also updated Jackalope and PHPCR Utils core system