basic structure for mvc pattern
return false on links -> page does not hop to the top on click
div_comment_add -> comment_add_link, more consistent with the other classes
added sql file to create schema
added cursor:hand on .comments
added class 'searchable' for text elements that should be searchable
added search textfield and event handler
highlight search results; display count of matchings
background-color -> background
added padding for searchables -> highlighting nicer of that element