view .svn/pristine/6d/6d6109d0a05e56194e4d35c31ae6b55d51c938dc.svn-base @ 1087:74407a04925c issue_540

* (publication.rb) - fixed the acts_as_activity query (see diff to previous commit) - not returning duplicate results any longer; added the visible scope to the publication model;
* (init.rb) - created a new public permission - view_publication.

class AddViewWikiEditsPermission < ActiveRecord::Migration
  def self.up
    Role.find(:all).each do |r|
      r.add_permission!(:view_wiki_edits) if r.has_permission?(:view_wiki_pages)
    end
  end

  def self.down
    Role.find(:all).each do |r|
      r.remove_permission!(:view_wiki_edits)
    end
  end
end