Git commits in Moodle 3.8.3 by cescobedo

commit 00de69b59f63fe3cb7ce3ae42f6fa09d21223ccd
Author: cescobedo <carlos.escobedo@gmail.com>
Date:   Tue, 07 Apr 2020 21:20:08 +0800
Tag:    v3.8.3

MDL-68356 core_h5p: Fix h5p mimetype

commit d2791a63ec415be5c5f0c383588e72f758e7e5c0
Author: cescobedo <carlos.escobedo@gmail.com>
Date:   Mon, 30 Mar 2020 17:37:59 +0800
Tag:    v3.8.3

MDL-68285 core_h5p: Fix unused variables and undeclared globals

commit dc0cbc24f397d40eab4c52054c0a133027763ff0
Author: cescobedo <carlos.escobedo@gmail.com>
Date:   Sat, 29 Feb 2020 17:50:40 +0800
Tag:    v3.8.3

MDL-68068 core_h5p: Replace $_SESSION by $SESSION

commit 9f4968676a304d6ba034f09433568b4931bbde47
Author: cescobedo <carlos.escobedo@gmail.com>
Date:   Sat, 29 Feb 2020 17:00:29 +0800
Tag:    v3.8.3

MDL-68069 core_h5p: delete cache assets when removing libraries

commit 6e3dfc7927b0f6e45a966f2dc63c9db51bef457c
Author: cescobedo <carlos.escobedo@gmail.com>
Date:   Fri, 28 Feb 2020 05:09:05 +0800
Tag:    v3.8.3

MDL-67995 format_singleactivity: Fix dropwdown type of activity