source_resource link improvements

[allanaaa]

Rather than a direct link to an Omeka item in a site, the OSII osii:source_resource link is to the API, i.e.

https://explore.saltairecollection.org/api/items/13698

rather than

https://explore.saltairecollection.org/s/p/item/13698

on

http://dev.omeka.org/amayer/amayer-s/omeka-s/s/my-omeka-s-site/item/21713

I realize the technical difficulty is that we don't look at sites and their URLs when importing items directly from the installation. But this does seem less than ideal.

Is there a way to improve this? Can the API identify which sites an item is part of, and then the importer can translate that to the first URL in the list? I know from the python export script that we provide an item's sites by ID ("1|2|4" etc.) but do we send the slug somewhere?