CGAVDocument: Don't Update Grid. Leave that to CGAVView.
CGAVView: When updating grid, make a copy of appointments, and use the copy, so there won't be clashes when updating appointments in the background.
CGDocument: Minor Changes in AppointmentNoShow; New method AppointmentUndoCheckIn
CGDocumentManager: Resequenced load order b/c UserPreferences now talks to DB.
DAL: New Methods to save autoprint preferences; new delegate to enable some async stuff
DCheckIn & DAppointPage: _myCodeIsFiringIstheCheckBoxChangedEvent added to protect against firing event when setting checkbox in the code.
DPatientLetter: No changes. UserPreferences: Now gets and saves user preferences from DB.
