Update Order.php

Comments added
Update Module.php

Added comments
Update Cart.php

Added comments
Update order_conf.html
Update order_conf.txt
Update invoice.tpl
Update de.php

Customization and some corrections
Update OrderController.php

Added comments
Update ParentOrderController.php

Added comments
Merge pull request #11 from EU-Legal/dev

Second pull request from BLUTIGES
Merge pull request #12 from Nobodaddy/patch-9

Update translation: order_conf.html
Merge pull request #13 from Nobodaddy/patch-10

Update translation:  order_conf.txt
Merge pull request #14 from Nobodaddy/patch-11

Update translation:  invoice.tpl
Merge pull request #15 from Nobodaddy/patch-12

Update translation:  de.php
Merge pull request #17 from EU-Legal/dev

Hipay Merge Pull Request
Merge pull request #20 from BluTiGeS/dev

Update Sofortbanking to 2.5
Handle F5 refresh on payment page to keep KAUFEN button active

It looks strange if a customer accepts terms of service and has choosen
his payment method , and just wants to refresh last page and the KAUFEN
Button get s disabled but all radio buttons and checkboes are still set.
set js init vars if EU PAYMENT IS ACTIVE,(needed for guest checkout)

Error undefined JS vars will occur otherhise if trying to save guest
account on OPC
Merge remote-tracking branch 'upstream/dev' into dev
Update info.tpl

+ layout modification module front