Git commits in Moodle 3.11.1 by Huong Nguyen

commit cb4821953734e40d54badf4f6985fcb2713c6aa0
Author: Huong Nguyen <huongn@moodle.com>
Date:   Mon, 05 Jul 2021 18:25:09 +0800
Tag:    v3.11.1

MDL-71922 file: Enhance endless recursion requests protection

commit 29f384fd91705d07edfe5071a192d86343255916
Author: Huong Nguyen <huongn@moodle.com>
Date:   Tue, 01 Jun 2021 09:51:40 +0800
Tag:    v3.11.1

MDL-55243 files: Make is_valid_image support SVG files

commit b17d54b307fe245c5a8fa0ec593ae6b61c2ab926
Author: Huong Nguyen <huongn@moodle.com>
Date:   Fri, 28 May 2021 16:03:41 +0800
Tag:    v3.11.1

MDL-71737 portfolio: Make is_valid_image become internal function

commit da14398a88b90928ea983e581c42412b33f47e1e
Author: Huong Nguyen <huongn@moodle.com>
Date:   Fri, 28 May 2021 09:55:43 +0800
Tag:    v3.11.1

MDL-71741 portfolio: Reset header information between requests

commit 63a05f4f1f4c88e48dbafdfdee8b364bea48f044
Author: Huong Nguyen <huongn@moodle.com>
Date:   Fri, 28 May 2021 09:52:05 +0800
Tag:    v3.11.1

MDL-71741 portfolio: Use the correct configurations

commit 67ca5af409f062b9e161fbfd4972d0f7e08ba2ed
Author: Huong Nguyen <huongn@moodle.com>
Date:   Thu, 27 May 2021 16:29:07 +0800
Tag:    v3.11.1

MDL-71145 qtype_ddmarker: Fix Behat failure

commit c08dab048b29646cddfd9089db34fbeeff329043
Author: Huong Nguyen <huongn@moodle.com>
Date:   Tue, 11 May 2021 16:12:58 +0800
Tag:    v3.11.1

MDL-71126 Quiz: Manual grading page size preference can get stuck at 0

commit 9c4948a892b8eaddf9c1f29670b6c0a0fc0cca4c
Author: Huong Nguyen <huongn@moodle.com>
Date:   Mon, 12 Apr 2021 16:59:00 +0800
Tag:    v3.11.1

MDL-71145 qtype_ddmarker: Incorrect marker positions in responsive mode