Extend the detail_link template tag for MapFeaturePhotos
Make photo review work with with MapFeaturePhoto
Fix some copy-paste errors from extracting TreePhoto -> MapFeaturePhoto
Check *all* subclasses of Auditable and Authorizable in FieldPermission

The prior method of checking only leaf subclasses fails now because
MapFeaturePhoto is not a leaf class, but is used directly
Merge pull request #1376 from maurizi/map-feature-photo-review

Map feature photo review