Git commits in Moodle 3.4.x by Eric Merrill

commit 372476328c5f5d61fe82cd1534b15dcf7bed7b82
Author: Eric Merrill <merrill@oakland.edu>
Date:   Tue, 09 Oct 2018 03:46:28 +0800
Tag:    v3.4.6

MDL-63456 qtype_multichoice: Return a default options object if missing

commit 98dec1b08cd6dbbd2c84740ed06c23a773ab5ce4
Author: Eric Merrill <merrill@oakland.edu>
Date:   Wed, 26 Sep 2018 11:35:37 +0800
Tag:    v3.4.6

MDL-63456 question: Improve Aiken error handling and multichoice errors

commit f539686553372f7c390110668642f8bf66173f2b
Author: Eric Merrill <merrill@oakland.edu>
Date:   Tue, 10 Apr 2018 02:47:50 +0800
Tag:    v3.4.3

MDL-61913 restore: Protect against blocks that aren't being created