Implemented Recipe Image Display

- When you view a recipe/dish, if an image exists in the dishIMG
directory, it will display that image.
- The image in the directory needs to be named '{dish name}.jpg' . So
the 'Peppered New York Strip Steak' recipe, the image file would be
called 'peppered new york strip steak.jpg'
- In the recipe database, the pic_location should just be the value of
the dish name (ex. 'peppered new york strip steak')