[WIP] hw_escpos: printing client-side defined xml templates
[IMP] hw_escpos: print_xml_receipt() controller allows you to print an xml defined receipt
[MERGE] from trunk
[IMP] hw_escpos / point_of_sale: print receipt with an xml template
[IMP] hw_escpos: re-enabled image printing in xml receipts
[IMP] posbox: add a homepage to the root controller on the posbox that explains what it is and where to find information
[IMP] hw_proxy: make the posbox doc publicly available
[IMP] posbox: add a software upgrade page that allows to remotely update the posbox's software
[IMP] posbox: print the homepage url on the status ticket
[IMP] hw_escpos, hw_proxy: improved status page appeareance, add a listing of connected devices to hardware status page
[MERGE] from trunk
[MERGE] from trunk
[MERGE] point_of_sale & posbox: new posbox homepage, posbox software upgrade system, printing xml based receipt