view .svn/pristine/a3/a3b9e1f5db2062f981afc156975b07fe4b88affe.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 AddSettingsUpdatedOn < ActiveRecord::Migration
  def self.up
    add_column :settings, :updated_on, :timestamp
    # set updated_on
    Setting.find(:all).each(&:save)
  end

  def self.down
    remove_column :settings, :updated_on
  end
end