CLC-3709 Add Craig Cook as a superuser and remove Mike Blake

This is in response to CLC-3709.  I have added my own ID as a superuser, and removed Mike Blake.  The opposite is true for the down migration.   This commit handles the first part, creating a migration (similar to and based on db/2013121913050404_add_mike_blake_to_user_auths.rb)

The second part of this ticket (to update the db/developer-seed-data.sql) is waiting on updating the base file by Chris, once the next release is cut.