Git commits in Moodle 3.6.1 by Tim Hunt

commit 270524858e0882ff24ebf392396ca640b65bf4c7
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 30 Nov 2018 20:33:54 +0800
Tag:    v3.6.1

MDL-64286 qtype_gapselect: removed unneeded line of code

commit ac0b8201a9adee796c74c0fa0c238f3e0147ff51
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 26 Nov 2018 20:52:09 +0800
Tag:    v3.6.1

MDL-63459 qtype_calculatedmulti: fix incorrect hint object type

commit be27fc0fe302a6953f8668ccc4b5aecfd830a325
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 26 Nov 2018 20:49:47 +0800
Tag:    v3.6.1

MDL-63459 qtype_calculatedmulti: unit test should test this qtype