more pretty 404-page (#813)
more pretty 404-page (#813)

* Added rolling fruit to 404

* Used fa-icons and green background for buttons

yunity/karrot-frontend,yunity/foodsaving-frontend,yunity/karrot-frontend,yunity/foodsaving-frontend,yunity/foodsaving-frontend,yunity/karrot-frontend,yunity/foodsaving-frontend,yunity/karrot-frontend