remove urlvalidator extension as node-validator already has a url validator
implement validation on add page
fix 'go back button' for edit page
fix 'go back' button for add page
add underscorejs and start using it
only show 'your email address' field on add page
add libs folder for client-side libs
add webshim to enable html5 validations to work cross-browser
put 'add park' link on search results page
tweak go back links & footer