view db/migrate/036_add_changeset_commit_date.rb @ 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 AddChangesetCommitDate < ActiveRecord::Migration
  def self.up
    add_column :changesets, :commit_date, :date
    Changeset.update_all "commit_date = committed_on"
  end

  def self.down
    remove_column :changesets, :commit_date
  end
end