Testing adding geometries to the map

[cynthiamah]

The initial color for layer geometry should be different for each layer. Currently, all layers are using blue when they are styled by: uniform.

Tooltip - when hovering over the "add marker" icon, display the tooltip "Add marker"

If a layer is styled by: uniform, in the legend, the category header should be "All items".

In the legend, "styled by: x", needs to update to reflect current selection. The legend always says "styled by: uniform" no matter what I choose. For example, if I chose "style by: name", categorical, the legend still says "styled by: uniform". If I select it again, it knows it is styled by name, categorical. It is just not reflecting the current selection in the legend.

Multiple layers referencing the same dataset: If I move a point, it does not propagate the changes to all layers that use the same dataset (until I refresh). Conversely, changes to polylines and polygons behave correctly - moves are propagated on all layers that use the same dataset.