Reviewed-on: #453 Reviewed-by: Amy <a258wang@csclub.uwaterloo.ca>
Added endDate to events.
Co-authored-by: Bonnie Peng <bonniepeng2002@gmail.com> Co-authored-by: Aditya Thakral <a3thakra@csclub.uwaterloo.ca> Reviewed-on: #447 Reviewed-by: Emily Chiu <e26chiu@csclub.uwaterloo.ca> Reviewed-by: Amy <a258wang@csclub.uwaterloo.ca> Co-authored-by: b38peng <b38peng@uwaterloo.ca> Co-committed-by: b38peng <b38peng@uwaterloo.ca>