SpaceX has officially delayed its first crewed test flight of the Dragon capsule from 2017 to 2018 after the Sept. 1 Falcon 9 explosion, NASA said Monday. Dragon is designed to shuttle astronauts to the International Space Station from Cape Canaveral. In a statement to News 6 SpaceX confirmed the updated test dates and said the company is continuing its investigation into the Sept. 1 explosion. “(SpaceX) is working to complete the final steps necessary to safely and reliably return to flight,” the company statement read.  “As this investigation has been conducted, our Commercial Crew team has continued to work closely with NASA and is completing all planned milestones for this period." The company said the 2017 focus for Dragon will be on final testing of the propulsion and parachute systems.…