As TP-Link 841v10 are not supported by gluon 2015.1.x, they need to
  be feed with the experimental firmware. Since the experimental firmware
  could break a router, we want these aliens to update only from stable
  versions.

It is posible to keep the Order from sites.conf for Drop-Down-Menu
Hidden Sites are not shown in Config-Mode

  See https://github.com/freifunk-gluon/gluon/issues/455 for
  further details.

  This change applies only to the 2015.1.x branch

  If we change i.e. the mesh protocol or something else which
  breakes connectivity from mesh only nodes to their neighbours,
  they could get disconnected from the rest of the network.
  Therfore we try to update via the mesh network and if this fails,
  we try to find any open network to get our new firmware.

  This is also discussed in https://github.com/freifunk-gluon/gluon/issues/427

good readable format for site.conf

Apply Upstream Changes from gluon-config-mode-geo-location

Apply Upstream Changes from gluon-config-mode-mesh-vpn

This Package only makes sense for 802.11s-mesh

Improve Robustness at false "currentsite"