Adding date filter

[skim68]

Do you think there should be a date filter? Some students have submissions from last semester flowing into the dashboard, but even if it's old they did complete it so it depends on how we want to frame it.

[isabellaNoelle]

I can potentially add in a date filter. Right now all of my aggregation for the submissions is being done in SQL with a view, so I can just pull it in. To have a date filter I would have to go back to doing all of the aggregation in R (which might bog down the dashboard, especially with several semester's worth of data).