luci-olsr: neightbl for ipv6 neighbours

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9865 ab181a69-ba2e-0410-a84d-ff88ab4c47bc
modules/admin-full: fix extroot and fsck availability check (https://dev.openwrt.org/ticket/13837)

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9866 ab181a69-ba2e-0410-a84d-ff88ab4c47bc
luci-olsr: add snr for olsr neighbours and update Legend

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9867 ab181a69-ba2e-0410-a84d-ff88ab4c47bc
luci-olsr: fix snr calc olsr neighbours and unit in Legend

git-svn-id: http://svn.luci.subsignal.org/luci/trunk@9868 ab181a69-ba2e-0410-a84d-ff88ab4c47bc