Seems like it'd be helpful to have a wiki. The wiki needs to have
the following properties:


1. editable by contributors without crazy hassle creating groups
   and permissions
2. can't suck
3. must have decent anti-spam measures that don't make it a hassle

Adding Chris and Tomaz for their thoughts.

It should be possible to do something like:

::

    ./bin/gmg wipe_environment mediagoblin.ini

This should then ask the user to confirm (the user should have to
type "yes") but should then wipe all:


-  sessions
-  the database specified in mediagoblin.ini
-  the files in the specified public\_store and queue\_store
   (assuming they're of BasicFileStore type)

Using buildout has some problems. So we need to write up
instructions in the hacking howto for setting up a
build/development environment using virtualenv --no-site-packages.