To prepare sauce, heat olive oil in a Dutch oven over medium-high heat. Add onion, and sauté 3 minutes or until tender. Add garlic, and sauté 1 minute. Add crushed and diced tomatoes; bring to a boil. Reduce heat, and simmer 30 minutes. Add the parsley, oregano, 1/4 teaspoon salt, crushed red pepper, black pepper, and clams; simmer for 10 minutes. Remove from heat, and set aside.
To prepare ravioli, combine crab, chopped red bell pepper, panko, chives, and 1/8 teaspoon salt in a medium bowl. Add ricotta; stir gently to combine. Working with 1 wonton wrapper at a time (cover remaining wrappers with a damp towel to keep them from drying), spoon about 1 tablespoon crab mixture into center of each wrapper. Moisten edges of wrapper with water. Fold in half, pinching edges together to seal and create a half-moon shape. Repeat procedure with remaining wonton wrappers and crab mixture.
Fill a large Dutch oven with water; bring water to a boil. Add half of ravioli; cook 4 minutes or until done. Remove ravioli from pan with a slotted spoon; keep warm. Repeat procedure with remaining ravioli. Serve ravioli immediately with sauce.