Adds modernizr for HTML5/CSS3 support. Fixes bug with odd line breaks on the submit form when form validation fails. Fixes model ownerships and posessions by changing :user attributes to :user_id in the post and comment models. Minor performance tweaks in the vote controller. Adds :hasduekarma validation to the submit form; karma threshold for posting is currently 10. Should be lowered until we have 50+ daily active users. Much better form validation and error messages. Form requires checking that guidelines have been read. Prevent duplicate and non-URL submissions. Smoked a joint and not sure if homepage posts are ordered by karma or not. We'll findout tomorrow.