The two finalists in the competition to land George Lucas' Museum of Narrative Art — San Francisco and Los Angeles — will need to put together one last, best push for the $1 billion project in the next few weeks, according to The San Francisco Chronicle. The Chronicle notes that both San Francisco and Los Angeles have until the next two weeks to submit a final offer to Lucas' museum team, which will in turn make a decision by January 6. The San Francisco Board of Supervisors voted earlier this…