BUgfixes

Created by: unid15

-piano and violin windows are now properly updated (no need to click on them again everytime you do something) FIXES https://github.com/d3athrow/vgstation13/issues/2292 -clicking on the janicart when you're both riding it and there's a trash bag inside of it will allow you to choose whether YOu take the bag out or get off the cart FIXES https://github.com/d3athrow/vgstation13/issues/2654 -retarded custom food names are no longer retarded FIXES https://github.com/d3athrow/vgstation13/issues/2412 -custom sandwiches are big again -added missing ..() checks in chem equipment, prevents exploits like mice using it