* refactored logic for fidis orders, formerly living in the UserController, seperated User and Order Controller
* added an (by default hidden) export option for orders)
* extended abilities of order transfer object
* added an order export hydrator that compiles data of an order to an array
* extended the order list with a button that is hidden by default (if 'export_button' is not set)
* allows export of orders in 3 different flavor of CSV (or rather, fake csv that is labelled as txt) and json.
* language vars replaced some static texts with dynamic i18n ones, in this particular case the button descriptions of are affected