Changelog 4.15 beta1

When editing a service in IPTV, it is now possible to choose on which port of a switch the service is located. It allows for a better overall view of each port.
When editing a service in IPTV, it is now possible to set Invoicing date. It makes it possible to set a day on which the client will be invoiced. This setting will be used in the near future (when the Invoicing module is rewritten) so it will be possible to invoice a client on a specific date for any invoicing period (for example: 15.11.2014 to 14.12.2014). For now, this setting has no effect on invoices.