Git commits in Moodle 3.1.0 by Luca Bösch

commit 2c13bbba2b1c0b7cd702de12a222a1a9b36fd552
Author: Luca Bösch <luca.boesch@bfh.ch>
Date:   Mon, 18 Jan 2016 15:31:49 +0800
Tag:    v3.1.0-beta

MDL-37739 mod_wiki: Wiki ToC header href remove square double brackets.