Git commits in Moodle 3.4.x by Brendan Cox

commit fba7dcd90abd45210d782a79c6e25bb3840c7438
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Thu, 28 Jun 2018 19:58:25 +0800
Tag:    v3.4.8

MDL-62702 core_lib: parameters in POST override other LTI values

commit 00781f3590ba6c621974af1216d53619e7c0a347
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Tue, 08 May 2018 16:50:49 +0800
Tag:    v3.4.3

MDL-62210 mod_assign: improved validation in portfolio caller class

commit f53c4b18b44b0a59c0f9213ae55fb6c0e5c6206e
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Fri, 27 Apr 2018 07:46:13 +0800
Tag:    v3.4.3

MDL-62232 mod_forum: Additional tests for portfolio file export