Use case: In ckanext-dgu we want to index the harvest_object.content field. As indexing is done synchronously we need
to provide a way for that harvest_object to be accessed when the current http request is made by a non-sysadmin user.
The publisher profile allows general users to handle harvest sources
based on membership to a certain group (publisher), as opposed to the
default auth profile where only sysadmins can perform any harvesting
task.
To enable it, put this directive in your ini file:
ckan.harvest.auth.profile = publisher
TODO:
* Save publisher id / user id when creating sources
* Show publisher in form and index page