Added better error handling when namespace are missing
Merge pull request #3 from ding2tal/core-pr-3

DBC responces sometimes return XML where not all namespaces are defined.
Merge remote-tracking branch 'ding2/master' into ding2-master
Merge branch 'ding2-master' into case-2769

* ding2-master:
  Added better error handling when namespace are missing
Merge branch 'case-2769' into develop

* case-2769:
  Added better error handling when namespace are missing