Add event markers to the calendar map #41
Description
As a user on the calendar page
I want to see pins on the map for all the events in the event list on the page.
When a user hovers on an event on the left side of the page, the corresponding pin should enlarge and/or change color to indicate that you're hovering on it.
If you're feeling adventurous you can add a basic tooltip on the pins with the event name, but we can put that off for another ticket if it's too much trouble.
Notes:
This can probably be copied from the legacy code, but we might want to refactor it anyway. I'm pretty sure I wrote spaghetti code
