.wm extension to the DispatcherServlet and it loads ContextPopulator
instances to populate the contexts for the template that is identified by
the URI. This page driven invocation scheme works more nicely in my humble
opinion and WebMacro certainly benefits from such an extension.
git-svn-id: https://samskivert.googlecode.com/svn/trunk@48 6335cc39-0255-0410-8fd6-9bcaacd3b74c