[Feature] Let users mark whether they got questions right or wrong (multiple choice)

[dustin-jw]

Feature Request

Description

To make the experience of studying nicer, we should give users an option to indicate whether they got a question right or wrong after they reveal the answer. If they got it right, that question can be deprioritized so they don't see it again until they've run out of other questions to see. If they got it wrong, we can either leave its priority level alone or make it more likely they'll see it again soon to reinforce the knowledge.

This all depends on #22 and probably makes sense to do if they can limit the number of questions they try at a time.