Problems generated by validate_document (in document_validate.pl) don't link to specific document

[jesusbagpuss]

The link generated in the warning is like:
http://repo.blah/cgi/users/home?screen=EPrint%3A%3AEdit&dataset=inbox&dataobj=1&eprintid=1&stage=files#documents

As the problem is generated by a specific document, it should link back to that document. It should also open the document metadata panel by default.

[jesusbagpuss]

Also, at the top of the Upload screen, the list of problems isn't displayed as it is on (all?) other workflow stages.

[jesusbagpuss]

And, when clicking the 'Update metadata' button for a document, the validate_document isn't run.

Adding a validate_document check to EPrints::Plugin::InputForm::Component::Documents _render_doc_div to show a warning for rolled and unrolled documents would be useful.