Git commits in Moodle 3.3.6 by Martin Gauk

commit 577410806ca6458be38e78627326807524029ec4
Author: Martin Gauk <gauk@math.tu-berlin.de>
Date:   Fri, 23 Mar 2018 17:08:39 +0800
Tag:    v3.3.6

MDL-61733 atto_table: fix creating new table