request #5814 - [tv3] Soap function getArtifactType returns an error

Bug: TV3 soap method getArtifactType() would sometimes return an empty array
instead of a SoapFault if user cannot access via complex permission settings.

Returning SoapFault in all cases now (code too complex and TV3 deprecated =>
minimal changes)

Change-Id: I62b29536dca43cbf06739ee23e0774d8b08c535f
Merge commit 'refs/changes/92/1592/5' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  request #5814 - [tv3] Soap function getArtifactType returns an error

Change-Id: I822fdaa0af535187267232875bea57ced369cea7
Tuleap 6.8.99.19

Change-Id: I12b254e23061fdc96425f58180f9a34b05e92a01