BRUSSELS (Reuters) - Martin Selmayr, a top aide to the head of the European Commission Jean-Claude Juncker, signaled on Friday there was an agreement on Britain s divorce terms with the EU by tweeting a picture of white smoke that is a symbol of the election of a new pope. Juncker, Selmayr and the EU s chief Brexit negotiator Michel Barnier are at a working breakfast with British Prime Minister Theresa May in Brussels. 