Investment System 1.1.0

-The key combination for opening/closing the menu has been set to “Left Shift + Y”
-Fixed an issue where the key combination change was not being applied
-The amount of money can now be entered via the keyboard
-Added 2 new buttons to add and subtract 1k and -1k
-For random interest rates, the interest rate is now displayed before investing
-Interest rates are “rolled” once a month
-Selectable interest rates from 0.5% to 5% (Random interest rates can go up to 10%)
-German translation updated (ä, ö, and ü instead of ae, oe, and ue)