admin-status/overview: Use MAC-Address in table header of associated stations instead of BSSID (#312)

modules/freifunk: Make display of ipv4 default route in public status work with freifunk-policyrouting enabled

modules/admin-full: remove PVID support, its not really useful and confusing, fix parsing of port count and cpu port, expose hardware name

libs/web: pass origin section id to :create() callback, needed when multiple, filtered TypedSection instances of the same type are used within a single Map

libs/web: add error message printing to nullsection template, fixes server side validation in SimpleForm instances