bugfix: submit search by pressing ender

turns out I had a typo on the form's directive
animate the simpleRadial pie chart viz

shamelessly stealing the effect illustrated at http://jsfiddle.net/Nw62g/3/
Create a Footer that will stay fixed at the page bottom

rather than jump around based on the size of the contents of ngView.
This means we no longer need spacers on the browse my ballot page
(which were just to minimize jumping when switching back and forth).