Salads at 4th of July cookouts and summer picnics tend to fall into a few worn-out categories. Mayo-laden potato salad. Greasy pasta salad. Maybe a tomato salad if you're lucky. Salads and side dishes get short shrift next to the blazing grill and charcoal taste of those cheeseburgers, or the splendor of the blueberry flag cake. Well, that shouldn't be so. Here are 15 summer salads that offer delicious summer taste, and something fresh, something new for your summer picnic table.