Case T-538/13: Order of the General Court of 2 September 2014  — Verein Natura Havel and Vierhaus v Commission (Access to documents — Regulation (EC) No 1049/2001 — Letter of formal notice sent in the context of ongoing infringement proceedings concerning the compliance with EU law of German aviation law — Refusal of access — Exception relating to the protection of the purpose of inspections, investigations and audits — Action in part manifestly inadmissible and in part manifestly lacking any foundation in law)