Shared layers with detailed permissions

[ThomasHalwax]

As of today all users that joined a shared layer have the same permissions. Everyone is allowed tho add, update and remove features in the layer and can change the layer name, too. In addition everyone is allowed to invite others to join the shared layer.

It should be possible to share layers with detailed permissions. The creator and managers of the layer have the power to manage the power level of joined users to be one of

• user (read only)
• editor (add, update, remove) features
• manager (change name of layer, invite & kick users)