It is this week's (ok, ok, last week's) Lunchbox.MANGO SALAD2 Tbsp mango chile vinegar, or other fruit or white wine vinegar plus some chile flakes1 Tbsp lime juice1 Tbsp extra virgin olive oil2 cloves garlic, minced or pressedsalt and pepper to taste1 large ripe mango1/2 English cucumber1/2 can black beans, rinsed and drained well1/2 c frozen sweet corn, thawed2 scallions, chopped1/2 bunch fresh