Shield customizations integration
With Turris Shield there are few changes in reForis (mainly hidden configuration). At the moment there is separate patched version but for maintenance purpose there should be only one version of reForis.
Detect if router is Shield and provide that information to frontend.
Blocking: turris/reforis/reforis#247 (closed)
Blocked by: turris/updater/supervisor#20 (closed), #159 (closed)