Gap-fill parts are only automatically submitted if all the gaps are answered #1147
Description
Gap-fill parts don't automatically submit unless all of the gaps have been answered. This is so that the student isn't repeatedly shown "you did not enter an answer" warnings on the unanswered gaps after answering each gap.
Students rightly assume that their answers will be automatically marked, even if they leave some gaps unanswered.
We need to either come up with a way of detecting when the student has moved on from a gap-fill, or to always automatically submit them but suppress feedback unless the whole thing has been answered.