Add Visit message div to VisitView dialog
Increased the heights and font of the search prompts in checkin.php
Patients automatically get all excludes turned on.
Register form now has an "Agent" field for the user name.
Registration now includes Guest_ID flag.
Visit.php - checkout date has more verification logic
Stays now have editable Expected Departure dates.  The latest updates the visit expected departure date.
Implemented a Maximum number of days to extend Expaected Departure dates in site.cfg
Implemented a buffer period to black-out new guests from solitations.
Updated vvisit_listing and vspan_listing to remove span field from key deposit fee select.

Signed-off-by: Eric Crane <ecrane57@gmail.com>