LDEV-2364Modified the createId method to return the jabberID instead of null when a 409 error code is returned from the xmpp server. A 409 error code indicates that the user has already been created with this ID
LDEV-2071, LDEV-2201, LDEV-57: Changed the Transaction Manager to Hibernate instead of JTA. Synchronized code in 2 more spots as deadlock exceptions had been thrown.