Council Decision (EU) 2015/836 of 11 May 2015 on the position to be taken on behalf of the European Union concerning the adoption of a Decision by the EU-EFTA Joint Committee on common transit and a Decision by the EU-EFTA Joint Committee on simplification of formalities in trade in goods as regards invitations to the Former Yugoslav Republic of Macedonia to accede to the Convention on a common transit procedure and the Convention on simplification of formalities in trade in goods