Case T-111/11: Judgment of the General Court of 13 September 2013 — ClientEarth v Commission (Access to documents — Regulation (EC) No 1049/2001 — Studies received by the Commission concerning the transposition of directives on the environment — Partial refusal of access — Exception relating to protection of the purpose of inspections, investigations and audits — Specific and individual assessment — Compatibility with the Aarhus Convention — Overriding public interest — Consequences of exceeding the period for the adoption of an express decision — Extent of the obligation actively to disseminate environmental information)