added this_case variable to all groups
added this_case variable to all groups

- spec/controllers/comments_controller_spec.rb - added this_case value to
  all groups, fixing broken spec

Updates #1145

EBWiki/EBWiki,BOWiki/BOW,EBWiki/EBWiki,BOWiki/BOW,BOWiki/BOW,EBWiki/EBWiki,EBWiki/EBWiki