ffwizard-berlin: enable freifunk-policyrouting by default/always

Addresses https://github.com/freifunk-berlin/firmware/issues/76

Makes the following commit obsolete:

https://github.com/freifunk-berlin/firmware/commit/dd5d2cf03c3fcb190954c48888f3351b0dc7552f
ffwizard-berlin: configure fallback and zones for freifunk-policyrouting
Merge pull request #7 from freifunk-berlin/policyrouting_enabled_by_default

ffwizard-berlin: enable freifunk-policyrouting by default/always