in case a target does not use overlayfs

Since switching to Barrier Breaker/procd, we'd not notice if we were
upgrading from a version before renaming the config file to gluon-setup-mode
as the upgrade scripts run after the preinit.

Fix this by checking later during setup mode init again and rebooting into the
regular run mode if we detect this case.

Die Bezeichnung "Mesh-VPN" ist etwas irreführend. Man kann denken, dass hiermit das Meshing aktiviert wird, wobei es ja — im Gegenteil — um eine Nutzung des WAN geht.

Configurable WAN

luci-theme: fix centering of form fields

gluon-announced: fix help message

It incorrectly stated "-m" to be the multicast group option, when it really was "-g"

This reverts commit f37f1f1ac2c9a44d0aafb25e3f5a01e16df6019e.

previously it was gluon-luci-privatewifi

The package luci-base now contains everything we need.

To start after haveged after the recent update.

gluon-luci-private-wifi: UI for enabling a private WLAN

This commit splits gluon-config-mode into several, mostly independent
packages.

* gluon-config-mode-core: basic functionality (required)
* gluon-config-mode-hostname: hostname field
* gluon-config-mode-autoupdater: show when autoupdater is enabled
* gluon-config-mode-mesh-vpn: fastd vpn configuration, bw limit
* gluon-config-mode-geo-location: geo coordinates
* gluon-config-mode-contact-info: contact info field

The package gluon-config-mode has been removed. You need to replace
it with these packages (or any subset of them) in site.mk:

* gluon-config-mode-hostname
* gluon-config-mode-autoupdater
* gluon-config-mode-mesh-vpn
* gluon-config-mode-geo-location
* gluon-config-mode-contact-info

Note: It is not possible to deactivate the autoupdater in config mode
anymore (expert mode will still allow it). Instead, a message is shown
in case the autoupdater is enabled.

freifunk-gluon/gluon#122

The specification says that the ifa_addr field of struct ifaddrs may be NULL,
and in Barrier Breaker, this does actually occur...

Make it clear that saving settings will reboot the device.

config-mode, mesh-vpn: refactor key generation