separate email body creation, move SF instance to web.config

salesforce instance for URL is moved to the web.config for easier
changing, re-work save email composition, update email provider to new
smtpcorp.com account
move notify email to the update grid so it can be edited
remove unused connection string
handle errors
add branding to NotAvailable page
Move notification email address to each grid row

now it can be updated
remove unused connection string
add error page