Democrats and Republicans disagree about a lot when it comes to President Obama's signature health-care law. But on one point, there is consensus: Obamacare is about much more than HealthCare.gov. That's precisely why improving the Web site, as the Obama administration announced Sunday it had done by its self-imposed Nov. 30 deadline, won't spare it a prolonged political battle that promises to spill over into 2014. Both sides have begun to look beyond the technical glitches that plagued the rollout of HealthCare.gov, the site designed for Americans to shop for coverage in the newly installed federal exchange.