mediagoblin/util.py is like our junk drawer for any functionality
we want to abstract out of a particular view, and it's starting to
get ugly. At present, it contains methods related to: testing,
templating, request processing, user sessions, dynamic component
importing, urls/slugs, email, translation, data sanitizing,and
pagination. Most of these categories are functionally distinct from
the others and could be separated out into different files
according to category, e.g.:

mediagoblin/tools
- tests.py
- templates.py
- requests.py
- text\_processing.py
- etc.

Once a structure is decided upon, imports referencing util.py will
have to be updated.

Users should be able to mark media entries as favorites by clicking
a button/link in the entry detail view (and probably from gallery
views as well). This change will likely require the creation of a
new "UserFavorite" model with a structure like:

{'user': user\_id,
'media\_entry': media\_entry\_id,
'created': datetime.datetime.now()}

...and also a new field on MediaEntry containing a count of
UserFavorites for that entry (to avoid expensive queries to
generate this number dynamically for every request).

Enable users to curate galleries containing an ordered collection
of media. User can add media entries (that users' or others'?) to a
gallery and specify the ordering of entries in the gallery. Two new
collections will be involved: Gallery (name, description, owner,
etc.) and GalleryEntry (gallery id, media entry, position, etc.).