Needs the optional gettext-tools package to run.

Adds controller functionality to read form definitions from an xml file in [Controller]/forms/ directory to keep Volt template code a bit cleaner an more understandable.

fix redirect (https://github.com/opnsense/core/commit/b43002fe04f92aa1e1d1037880c803d3b19deb2a#commitcomment-11122583)

Has the benefit of delivering a numer of additional statistics.

(captive portal / traffic shaper) work in progress moving captive portal rule generation into template system

Make room for traffic shaper rules and restructure ipfw rule parsing

When using webgrind, use the optional graphviz package for callgraph support

related to https://github.com/opnsense/core/issues/162

was used in some parts for radius, which is still quite messy code and probably not fully functional.