Git commits in Moodle 3.4.0 by Ruslan Kabalin

commit b03ffb099ec1ab3668670e6fbe718859550c20a0
Author: Ruslan Kabalin <r.kabalin@lancaster.ac.uk>
Date:   Mon, 10 Jul 2017 18:50:19 +0800
Tag:    v3.4.0-beta

MDL-59255 core: Make core_media_manager support RTMP.

commit 646e8bf668f8a7fde0c367076469652cfcfcad41
Author: Ruslan Kabalin <r.kabalin@lancaster.ac.uk>
Date:   Mon, 10 Jul 2017 18:49:25 +0800
Tag:    v3.4.0-beta

MDL-59255 core: Add rtmp:// support to validateUrlSyntax function.

commit 362be64a2bb9b5c2b733fb0891a1ae3f310e6430
Author: Ruslan Kabalin <r.kabalin@lancaster.ac.uk>
Date:   Mon, 19 Jun 2017 17:12:27 +0800
Tag:    v3.4.0-beta

MDL-59255 core: Extend test_clean_param_url.

commit e5ece45e84d3124b8fd86983e3bce0e9fa0f33ab
Author: Ruslan Kabalin <r.kabalin@lancaster.ac.uk>
Date:   Fri, 16 Jun 2017 23:12:09 +0800
Tag:    v3.4.0-beta

MDL-59273 core: Remove mailto links support in clean_param.