#349178 by agentrickard: Add generic link handling plus a custom text field. Also automatic trimming.

#315007 by Garrett Albright, Paul Kishimoto and catch: Take into account page count when using comment new link.

Major re-organization of handlers. PLEASE NOTE: This drastically affected the Views module API and until modules are updated to match, they will stop working. Efforts have been made to ensure that this won't cause your site to crash, but that's partly up to the individual module as well.