Git commits in Moodle 2.8.8 by Jun Pataleta

commit c845d8e2e01da74f3b29dc124f3b5b744000e91a
Author: Jun Pataleta <jun@moodle.com>
Date:   Thu, 20 Aug 2015 10:36:59 +0800
Tag:    v2.8.8

MDL-50852 formslib: Fixed client-side form validation problem.


commit 38547b00f51c01fed776c1a2708483557404f0ff
Author: Jun Pataleta <jun@moodle.com>
Date:   Thu, 13 Aug 2015 17:35:06 +0800
Tag:    v2.8.8

MDL-44828 filelib: Fix open error for force-downloaded files in mobile


commit 54f0ee08d8c196c3b087e776e7bef17faf7171f9
Author: Jun Pataleta <jun@moodle.com>
Date:   Tue, 28 Jul 2015 17:16:32 +0800
Tag:    v2.8.8

MDL-49864 mod_assign: Fix missing annotations when viewing PDF