Show different publication views based on user role

[cpritcha]

If the user is an author:

• they should only be able to see their publications
• they should only be able to edit the model url of their publications

If the user is curator:

• they should be able to see all publications
• they should only be able to edit publications they have been assigned to

If the user is an admin:

• they can view or edit anything

[cpritcha]

• Visitors can only see publications with metadata that have code (are not summary papers)
• Curator edit permissions are unnecessary for now (curators are trusted)
• Author permissions discussed in other issues