I just upgraded Nagios from 3.0.3 to 3.1.0 using the procedure described on the 'Upgrading Nagios" section of the DOCs (](http://)/nagios/docs/upgrading.html). All of my existing checks and configuration appears to be in-tact, as it was before the upgrade, but the main web page (Home) was not updated to 3.1.0 and I can't see the new 'Update Check' functionality. How can I recover that functionality without having to install everything from scratch?
More Information: The file that I think provides this functionality is main.html, and it is missing from the nagios-3.1.0 download. The file main.html is in the 3.0.3 and 3.0.6 downloads. Can someone send me this new file?