Send email related to event exceptions
* We weren't sending out appropriate emails for exceptions and other
event updates
* Write exception specific ics file code in CalendarUtilities (in
the existing ics file creator)
* Send appropriate Update: subject for updated events/exceptions
* Compose simple message text consisting of:
When: <time>
Where: <location>
* Prepend message text for exceptions to indicate that the message
relates to a particular instance of the event:
This event has been canceled for: <date>
The details of this event have been changed for: <date>
* New strings were added in CL#44141
* Updated CalendarUtilities tests
Bug: 2501270
Change-Id: I920de8120bc56d5bd565cbde26ff4807be41579f
3 files changed
