This method saves A LOT of hassles related to storing submitted values.  As-is `Response` is double stored because below I'm doing `@$data['Response1']	= $_POST['Response'];`  I think all of the direct recording lines should probably be dropped and we'll rely on `$data = $_POST;` + `arrayToLine()` to save us.

Listing `$keysNeeded` is still a good thing to keep because we'll want placeholders for all of our computed columns like `lenientAcc`, `strictAcc`, and `Accuracy`.  After the merge I'll drop the direct recording and push to master.