contrib/freifunk-policyrouting: Only disable olsrd_dyngw_plain plugin if it uses the main routing table

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9914 ab181a69-ba2e-0410-a84d-ff88ab4c47bc
contrib/freifunk-gwcheck: Only run the check when olsrd_dyngw_plain plugin is enabled and also uses the main routing table

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9915 ab181a69-ba2e-0410-a84d-ff88ab4c47bc