When a new self registered user access to a document detailed view, an internal server error is raised

[lauren-d]

Describe the bug
In the public view, when a self registered user want access to document details view,
it raises an internal server error.

To Reproduce
Steps to reproduce the behavior:

1. Go to the registration form and create a new account, you will receive a validation email
2. validate your account by clicking link in the email
3. Log in with your new account on rero-ils
4. Do a search and click on a document
5. See error

Expected behavior
The new logged in user can view the detail of a document.

Context

• server: all (local, ils.test.rero.ch, ilsdev.test.rero.ch, ...)
• version: v0.12.0

Screenshots

Additional context
When a user registers on the site, its new account is not associated with a Patron resource.
It's only an invenio user.
In the document detail view, there is a method to check if the user can request the document.
To do that, we need the patron resource.

[lauren-d]

This issue is resolved with #1263