Add Groups
Layers should be groupable. Groups should also be groupable. Inside a group, all layers should share some of their options.
When creating a new layer, it should be possible to add all layers of a source as one new group.
Layers should be groupable. Groups should also be groupable. Inside a group, all layers should share some of their options.
When creating a new layer, it should be possible to add all layers of a source as one new group.