Folder Contents Appending '/view' To Some URLs
In a standard (Plone 3.1) site, when you go to folder contents, any Images and Files that are included in the listing automatically have "/view" appended to their hyperlink (so that you get the content view rather than the raw data). If you subclass ATImage, you don't get this by default which causes problems for content creators (they click on an Image and can't get to the "edit" tab).
The solution is to add your custom types to the site properties field "typesUseViewActionInListings".
The folder_contents template (code defined in plone/app/content/browser/foldercontents.py) uses this to determine which URLs to append '/view' on to.

