Git commits in Moodle 3.6.4 by Tobias Reischmann

commit c106bcfc54e7dbf0f2a0139abf122458ea3bc49a
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Mon, 29 Apr 2019 23:24:29 +0800
Tag:    v3.6.4

MDL-63959 mod_feedback: Add phpunit tests for get_pages in completion

commit 24e4f1d1c850c70e240bdea7c100eb36f2b24ab6
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Thu, 28 Mar 2019 20:17:32 +0800
Tag:    v3.6.4

MDL-65206 calendar: Enable update of location in repeated events.

commit 7d02fe560ad7f8902e445ef4f5afe452575c3c54
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Fri, 15 Mar 2019 01:59:01 +0800
Tag:    v3.6.4

MDL-64267 core_message: Removed pb-2 from message-container

commit 408efe43c55e037f11600b65ab3d18662f8eb2c5
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Fri, 15 Mar 2019 01:53:00 +0800
Tag:    v3.6.4

MDL-64267 core_message: Moved contact-request to dont cause scrollbar