issue  https://github.com/opnsense/core/issues/63

Also style, license prettify, obvious bugs along the way.

Enables us to find all paths better using grep.  Always trying to
use the full path, even for system utility invoke in case those
move from ports to base or vice versa, related to #1.

ipfw ruleset not loaded after start/restart of captive portal (https://github.com/opnsense/core/issues/49)

this is not a complete fix of the issue, but forces a reload of the ruleset. The behaviour of stopping a zone is not correct now, becasue the ruleset remains active the clients cannot access the internet. A workaround is disabling the zone and stopping it then.

For now the API implementation is pretty basic and mainly targeted at ajax usage, proper authentication for machine to machine use should be implemenented later.

The example /ui/sample/ contains a simple echo service.

add Interfaces to menu system, in the current setup this is the only dynamic item. May need an easier hook in the future, but or now this works fine

changed post handling for apply button.