Added colorscheme css file.  Added working formatted timestamps to comments.
Added topbar and buttons for persistant nav.
Added javascript handler to signup button.  Created static form to feed to the javascript.
Changed user login to a generated form which subs login via ajax, then clears the form and changes top bar to contain a user profile link.
Added full support for registration via ajax form.  Changed text of sign in and registration buttons.  Removed 'Sign in' text from index page.
Added validation of user_id to comment class.  Reworking comment output for posted comments.