adding a helper to make it easier to track event using Google Analytics event tracking
updating public form to use event tracking

closes #5
adding Google campaign tracking to inbound links
adding GA tracking to the tweet list in admin

also adding config to ActiveAdmin initializer to load applicationhelper so it's available in those views
hacking in a custom footer for the admin to use google analytics there
removing cruft
Merge pull request #11 from smartchicago/adding_event_tracking

Adding event tracking