Use alarmmanager.setExact() for timeout schedule in NotificationUtils…

[lemonboston]

…. #468

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Just a note, that I though about the possibility to improve the codes for setting up alarms with something like:

interface Alarm
{
      void set(Context context);
}

and have implementations to enable re-use, they would handle Android version routing, too,
but since this ticket required so little change, I though the refactor is not worth it at this point.