Revert "Converted coffeescript to js for accessibility"

This reverts commit 8f2a8e2b2df088dbe22163169371301ccdf4f9f5.
Cleanup
Date Selection, Sport > Category selection working
Category deselection working
Using a matcher for URL params
Updating sports and categories on date change
Added events table
Filtering events by selected filters/categories works now
Changing events with date works