Item12396: approaching a first beta

   * added ability to store a lexicon as META:LEXICON data using MetaDataPlugin
   * added an example LexiconForm
   * added switch to explicitly switch on syncing the LANGUAGE and CONTENT_LANGUAGE preference variables
   * added new lexicon parameters to TRANSLATE
   * docu and examples



git-svn-id: http://svn.foswiki.org/trunk@16875 0b4bb1d4-4e5a-0410-9cc4-b2b747904278