added first full working version of embeddable elections

- added several new fields to the database to support unauthenticated,
  embeddable, and early result visible full elections

- modified full election create to allow for proper options and to
  display the full election code

- added new layouts, views, css, and images for embeddable elections

- modified full elections to work with the new form of images in the
  last commit

- fixed several bugs related to vote recording and timestamp,s