Added unit test for tamboti-utils:get-username-from-path().

References #482.
Added fix to upload.xql so that the top user to own all uploaded
resources.
Moved upload.xql to 'upload' module,

References #484.
Fix for collection owner to be also owner of uploaded resources.
Moved data-inconsistencies.xq to reports section.
Added duplicate-acl() function.
Added resources for the unit test for duplicate-acl() function.
Finixhed unit test for security:duplicate-acl() function.