Bugfixes

• Fixed device's "changed" signals emitting on the creation of new
  device
• Fixed django-reversion's recovery buttons were hidden from users
  of the "Operator" group in the admin dashboard of Certificate and
  CA models
• Removed hardcoded static URLs which created issues when static
  files are served using an external service (e.g. S3 storage buckets)
• Fixed permissions for "Operator" and "Administrator" groups to
  access "OrganizationConfigSettings" objects
• Fixed support for multiple wireguard tunnels on the same devices
• Fixed "/api/v1/controller/device/{id}/" REST API endpoint not
  updating the device's configuration backend