#67

#48

refactor: workaround damit mir das ding nicht um die ohren fliegt. (bleibt so bis michael das ganze behoben hat)

feat: Currency Lang Switch reworked. Do not show arrow if there are nothing to switch (neither language nor currency)

#10

feat: user currency -> the user can now have his own currency, so he can use the exchange rate to display the price in his currency.

feat: New controL --> Lang Currency Switch.