First version of RT Billing pkg. Basic concept is if a customer has this package...

First version of RT Billing pkg.  Basic concept is if a customer has this package, then any time added to ticket comments in RT will be added up and multiplied by the base rate, with each entry showing up as a lineitem on their next invoice.

This has not been used in production yet by anybody, it was just a proposal done for a customer.
 Modified Files:
 	TicketSystem/RT_External.pm
 Added Files:
 	part_pkg/rt_time.pm