If the site / organization has not yet registered for the hub the hub tab should not be displayed in the authoring tool.
We will announce the hub to those that have volunteered to share content first. When there is some content in the hub we will make it available to everyone.
code in hub-client, h5p-editor and h5pcom
Looks good to me, but when will we get this to the otter h5p-editor-repo?