Daylight Savings Timezone (DST) Bug Fix

- Added a basic time correction depending on whether or not daylight
  savings is in effect.
- When daylight savings is not in effect, the time is off by 3600 seconds
  (1hr).
- Added 5 test cases to test the different timezones (i.e. before DST,
  transition to DST, during DST, transition from DST, after DST).
- event.test.php - changes timezones in order to check DST:
  'America/Regina' doesn't have DST, 'America/Vancouver' has DST