Fixed an Issue when the user selects the notification

There was a bug when the user selected a notification message and tries
to delete the appointment associated with it. The user is not given an
option to delete an appointment or edit it when the user clicks on the
notification. This may change when a possible solution is found
Fixed Two Bugs with Notifications

I fixed a few bugs found in notifications. One was that it would not
allow multiple notifications to go off at the same time. The other was
that notifications would have duplicate intents.
Update the cancellation process for Appointments

The cancellation process for appointments was not correct, this had been
updated. Sends more information to the notification cancellation method.