Add EMS hours

[drewvolz]

This is an epic of a task. But we found the public facing interface that shows when spaces are reserved or not around Carleton — and it has an API. So why not use it!

[hawkrives]

Example:

curl 'https://ems.ads.carleton.edu/WebApp/ServerApi.aspx/BrowseEvents' \
                    -X POST \
                    -H 'Content-Type: application/json; charset=UTF-8' \
                    --data-binary '{"filterData":{"filters":[{"filterName":"StartDate","value":"2017-08-1 00:00:00","displayValue":3,"filterType":3},{"filterName":"EndDate","value":"2017-09-1 00:00:00","filterType":3,"displayValue":""},{"filterName":"TimeZone","value":"64","displayValue":"","filterType":2},{"filterName":"RollupEventsToReservation","value":"false","displayValue":""},{"filterName":"ResultType","value":"Monthly","displayValue":""}]}}' | jq -r .d | jq .