Added ZDP UserDescSetCommand and UserDescConfCommand
Added ZDP ExtendedSimpleDescReqCommand and ExtendedSimpleDescRspCommand
Fix in NwkAddrRspCommandTest for test that did not run because it's name did not start with test
Changed display of Endpoint from decimal to hexadecimal
Minor improvements

* small:
  Changed display of Endpoint from decimal to hexadecimal
  Fix in NwkAddrRspCommandTest for test that did not run because it's name did not start with test