make the signup form create an account... badly
add validation to the account resource
use encrypted passwords
add joplin profiles and db configurations for development, test, and
production

 - add joplin profiles for test and production
get migrations working on Heroku

  - add some code to parse Heroku's DATABASE_URL into a jdbc url
  - switch from joplin's lein task to an aliased custom function so we
    can use said parsing function in the joplin migration conn string