SAN FRANCISCO — While 72 passengers have settled their personal-injury claims stemming from the crash of an Asiana Airlines flight in San Francisco two years ago, others are continuing their legal fight with the airliner and others involved in the accident that killed three Chinese teenagers and injured nearly 200 people. There were 291 passengers and 16 crew members aboard the Boeing 777 flight that originated in South Korea when it slammed into a sea wall on approach on July 6, 2013. Dozens of lawsuits have …