[Aleph rest-dlf connector] Finished implementation of UpdateUser Service using Aleph's rest API
Also removed Request and CancelRequest Item tests due to high verisimilitude of failure because of side effects of its usage & deletion impossibility in some cases
Also modified sample XML to UpdateUser & create it's revered version to easily reverse applied changes in order to verify it's functionality
Also added possibility to AlephPatronAddress of setting maximumLength of all nodes with "max_len" attribute within Patron -> Address restDlf's XML GET response