Fixed an issue with the quiz module in which the updated_date for the `quiz_progress` record was updated every time a response was stored, despite the fact that the timeout functionality for quizzes uses that updated_date to determine how much time is remaining on an attempt.
Fixed the import-quiz functionality in the gradebook module to properly import grades when not every question in a quiz is attached to the assessment. Previously, the total points were based on the total points of the entire quiz, now it is based on the questions attached only, and includes those that weren't answered as well, if necessary.