Git commits in Moodle 3.1.2 by Tony Butler

commit 0ae591c0bdd234e0e4690f14ee8d06b3ce8513dc
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Mon, 08 Aug 2016 22:29:14 +0800
Tag:    v3.1.2

MDL-55513 core_filestorage: Touch and test size instead of file_exists()


commit 1dd284107c1a67e84cad9271fdcded8a4f915503
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Mon, 08 Aug 2016 22:26:42 +0800
Tag:    v3.1.2

MDL-55513 core_filestorage: Pass full path of temp dir to remove_dir()


commit ab3894208ae4529dc0119f8f7eef19a3acb52fa8
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 15 Jul 2016 21:38:24 +0800
Tag:    v3.1.2

MDL-55245 assignfeedback_editpdf: Enable text in comments to be selected