To use:

 * Integrate code into main application tree
 * Add a route to get at the topic controller's 'extract' action
 * Delete and recreate the database
 * Run "rake db:migrate" to rebuild the empty structure
 * Log in as an admin Hub user and view the empty forum list, to
   ensure that an admin Beast user is created
 * Use the route to the 'extract' action - fetch the page ONCE
   and ONCE ONLY
 * Check that database population has been completed.

Note three issues, the third very important:

 * List of forums is currently hard coded
 * IDs of RForum forums are assumed to match those of equivalent
   Beast forums
 * DELETED ITEMS ARE TREATED AS LIVE, since the deleted flag is 
   not checked.