Added limit URL
Finalised logic for sending warning e-mails at various trigger points.
Added merge for plan when writing selectionhit to cater for default
selection not being part of the hibernate session.
Initial checkin of Postmark integration
Complete Postmark integration with working warning e-mails.
Backed out postmark library in favour of my own variation.
Set hibernate show-sql to false. System is stable enough now not to need
it for general operation.