Item8402: 

   * removing some unused view templates
   * starting a custom rss feed
   * using new SeoTopic from ClassificationPlugin
   * model author of a posting separately instead of relying on a rev1 author being present
   * properly rendere authorship of postings with multiple authors



git-svn-id: http://svn.foswiki.org/trunk@16691 0b4bb1d4-4e5a-0410-9cc4-b2b747904278