To make the salsa. Gently toss all ingredients in a bowl. Season with salt. Preheat the oven to 450° F. Place the salmon on a baking sheet. In a bowl, mix the olive oil, red curry paste, brown sugar, curry powder, and fish sauce. Rub the paste all over the salmon. Roast 10 minutes or until the fish is cooked to your liking. Switch the oven to broil and broil until lightly charred (watch closely!). Meanwhile, in a small skillet melt together the butter, garlic, and a pinch of chili flakes. Cook until the butter is browning and the garlic is crisp. Mix in the onion flakes. Break the salmon over the bowls of rice. Pour the chili butter over the salmon. Top with the mango salad. Enjoy!