[web] use a redirect for /data/foo requests that don't use the instance md5 hash
The actual file contents can be cached for a long time. If the request
doesn't use the hash, that's wrong. Using a redirect lets keep the
caching for the actual file contents while not breaking requests missing
the hash.
Schema of the data
------------------
First take a look at the data schema_ then try to remember that you are browsing
through a heap of data by applying stylesheets to the results of queries. This
site is not a content management system with items placed in folders. It is an
interface to a database which applies a view to retreived data.
.. _schema: ../schema