Add gluon-config package containing the site config
gluon-core: add site_config loader script
gluon-core: convert generated upgrade scripts to Lua
gluon-mesh-batman-adv: convert generated upgrade scripts to Lua
gluon-next-node: convert upgrade script to Lua
gluon-config-mode: convert templates to use the new site config
gluon-config-mode: fix reboot.htm validity
gluon-radvd: replace pregenerated config file with Lua script
gluon-ebtables: use Lua instead of sh for the rule DSL to increase flexibility
gluon-next-node: convert pregenerated ebtables rules to Lua code
gluon-legacy: don't use generated scripts anymore
gluon-core: make Lua files proper modules
gluon-simple-tc: replace config script generator with Lua script
gluon-mesh-vpn-fastd: replace config script generator with Lua script
gluon-autoupdater: replace config script generator with Lua script
gluon-config-mode: allow using templates for texts again