Cargomensual now charges selected montly payments
Cpago has been modified to fit the new interface
Changed the backend of cargos
Versocio now displays montly services
Changes to the interface
Added function to charge monthly services
Added collection of services
Backend to add a new service to the catalog
Form to add new service to the catalog
Form to add new monthly service
template to add a new monthly service
Merge branch 'feature/newpayment'