Do not set surname when empty, causes Zimbra errors
Merge pull request #5 from TSchuermans/CP-350

Do not set surname when empty, causes Zimbra errors
Merge branch 'master' into develop

* master:
Merge branch 'master' into develop

* master:
  Domain Quota support
  Code cleanup
  Added new attributes to Account entity.
  Added option to getAccount by anything other than ID (e.g. name). Compatible.
  Added option to getDomain by anything other than ID (e.g. name). Compatible.