Sharing when not allowed to upload doesn't load any albums

[Renarde-dev]

Sharing when using a guest account or not having upload permissions will result in a endless loading screen.

This should throw an error with a snack bar or an error screen.

Note that this should handle community plugin permissions

[Renarde-dev]

Partially fixed by #256

Need to check if a guest/non-admin user doesn't trigger this.

[Renarde-dev]

Fail as guest (white screen)