Adds a menu item to the Food menu, "Generate Meal". Shows a nutritional target dialog - much like the initial target dialog - that allows you to specify the ranges of nutrients you would like in your meal. It then searches through the available foods and tries to match foods that meet the criteria. It tries to select multiples of servings, or failing that, just gives a weight. This shows up in a food search dialog allowing the user to select and add the desired food servings.