View showing multiple-choice options as select menu

[#51944625] No authoring support for this yet, but that's next. May yet need to iterate on the appearance.

https://www.pivotaltracker.com/story/show/51944625
Allows multiple choice qs to show as select menu

[#51944625] Another check box in the authoring form

https://www.pivotaltracker.com/story/show/51944625