Item12639: 

   * bring back category factory as part of the Category topic type
   * fixed error when displaying multiple Hierarchy widgets on the same page
   * deprecate RenderCategoryEditor
   



git-svn-id: http://svn.foswiki.org/trunk/ClassificationPlugin@17061 0b4bb1d4-4e5a-0410-9cc4-b2b747904278