Developer credits
Git commits in Moodle 2.3.3 by Tomasz Muras
commit d0bb10027b3c2c40c95387fbca5e952d6b976de6 Author: Tomasz Muras <nexor1984@gmail.com> Date: Mon, 24 Sep 2012 01:25:30 +0800 Tag: v2.3.3 MDL-35547 Fetch more sub-categories with one SQL query.
commit 2ade1b52f9f44ca80aff60da5ec8b325b2f8fc6f Author: Tomasz Muras <nexor1984@gmail.com> Date: Sat, 22 Sep 2012 04:01:06 +0800 Tag: v2.3.3 MDL-35547 Detect loops in question categories.
commit 24d9d1811f8b91c43a5c604c1eb07eea7c499804 Author: Tomasz Muras <nexor1984@gmail.com> Date: Thu, 20 Sep 2012 23:48:14 +0800 Tag: v2.3.3 MDL-35547 Detect question category pointing to itself as a parent.