Fixing Page Headlings - GET/POST Issues

The page headlinks will no longer show up on the login page.

Also fixed the issue where POST was not allowed on the API and other
various pages. It now accepts POST and GET, and looks at both sets of
variables in those situations.
Adding changes to CHANGES.md

Reverting the etc/ncpa.cfg to nagios/nagcmd. Also changed
the default log level to INFO rather than DEBUG.