Fix distant future check to detect whether a visit has started or ended
Fix distant future check to detect whether a visit has started or ended

Should use `isEqualToDate` instead of `==` to compare dates!
This resolves #118

e-mission/e-mission-data-collection,shankari/e-mission-data-collection,e-mission/e-mission-data-collection,shankari/e-mission-data-collection,e-mission/e-mission-data-collection,shankari/e-mission-data-collection