removeTime = function (dateStringWTime) {
  if (!dateStringWTime) { return ''; }
  return dateStringWTime.split('T')[0];
}
Removes time component of an ISO 8601 date string
@example
'{{ "1996-03-07T21:00:00.000-08:00" | removeTime }}'
this.$options.filters.removeTime('1996-03-07T21:00:00.000-08:00');

@param {String} dateStringWTime - The time using ISO 8601
@returns {String} - Date string without time