Code of Conduct question on Instructor Training form should be required

[maneesha]

The question I agree to abide by The Carpentries' Code of Conduct on the Instructor Training form should be required and should include a question on the left column of the form so the question doesn't get lost on the form.

[elichad]

I've made the question required, but the way the text is displayed is handled by Django, so we'd have to manually change the display for this question. I don't know quite how to do this, though I believe it should be possible (through some manipulation of the helper.layout attribute of the form).
For some other checkboxes on the page the text position makes more sense - perhaps it would actually be better (it's certainly easier) to move this question to a position in the order where it won't be as easily overlooked (i.e. not right after a large text box)