Git commits in Moodle 2.8.3 by Tim Hunt

commit a52b56b7198d6e8505249762a7e46dd29d5be9ce
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 23 Jan 2015 01:28:08 +0800
Tag:    v2.8.3

MDL-48949 mod_lti: tidy mod/lti/upgrade.txt


commit 27fc1831e8ab745f896c984f4d75afe42bcfd792
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 13 Jan 2015 21:55:33 +0800
Tag:    v2.8.3

MDL-48829 quiz nav: add a data attr to buttons giving the page


commit 142c67ce07f9fb9ccd713f97b93828ce58cabde4
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 12 Jan 2015 21:18:49 +0800
Tag:    v2.8.3

MDL-48477 questions: no delete icon for only top-level category


commit c38eb4e6e61987fd7bc7f09419fd51fcdad20bea
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 09 Jan 2015 01:41:51 +0800
Tag:    v2.8.3

MDL-48474 qtype_shortanswer: answers were not being trimmed.