Update commonlib to get fix for https://github.com/mysociety/alaveteli/issues/282 and https://github.com/opennorth/alaveteli/issues/2. Note, this will not fix https://github.com/mysociety/alaveteli/issues/902, which would require a change in request title validation in https://github.com/mysociety/alaveteli/blob/rails-3-develop/app/models/info_request.rb#L34.