Git commits in Moodle 3.3.x by Jakob Ackermann

commit ff6faa59eba34e08223d6bee5508f4687a6e6755
Author: Jakob Ackermann <jackermann@onlineschool.ca>
Date:   Thu, 12 Oct 2017 05:28:58 +0800
Tag:    v3.3.4

MDL-60187 mod_lti: Do not create a grade item when grades are disabled.


commit c2de62bc43b030b5fff6cca8e9e0ec3d16c586b6
Author: Jakob Ackermann <jackermann@onlineschool.ca>
Date:   Fri, 28 Apr 2017 06:23:43 +0800
Tag:    v3.3.2

MDL-58744 blocks: Add system context block position in non user context.


commit 6a36b8526ee42c19bfeffe5227325520cb69f2c2
Author: Jakob <jackermann@onlineschool.ca>
Date:   Fri, 13 Jan 2017 09:16:25 +0800
Tag:    v3.3.0-beta

MDL-37765 course: Add capability to ignore availability restrictions.