ffho-autoupdater-wifi-fallback

If a node has no connection to the mesh, neither via wlan-mesh nor via mesh-vpn, it ist not possible to update this node via autoupdater. There for the wifi-fallback was developed, to check whether the node is part of a fully working mesh or not. Else the node connects to a visible "Freifunknetz" and tries downloads an update as wlan-client via executing autoupdater -f.