s/require/require_once/g for filter.inc to avoid redeclaration errors in some rare cases.
Decouple filter.inc from functions.inc. There is no need to process filter functions most of the time. Include filter.inc where it is needed
Only include captiveportal.inc on this file as that is the only needed one.
These files are not rc.filter_configure
Add hooks for reloading captive portal