Add delayed_job and run migration.
Add daemons gem (although I think this was being included somewhere
anyway - delayed_job docs recommend explicit inclusion).
Add rake task to stop/start delayed job (cribbed from Bibapp).
typo
Add cap tasks for delayed job, although normally the shell scripts on the
deployment servers will take care of things.
Change number of delayed jobs to 3 - will have to feel this out later, but for our current purpose (Tom's web service for FITS) there is probably
some value in having more than one.