Added new file type for Vemco/VUE direct uploads, as well as a rudimentary XML response interface.

This is to support the VUE/AATAMS integration.
Use public URL, for Vemco's benefit.
Provide XML response where appropriate for unauthorised access to app.
Clean up example script. Fix aatams-rc URL.
Merge pull request #88 from aodn/vue_xml_upload

Added new file type for Vemco/VUE direct uploads, as well as a rudimenta...