clearMarkers not subclassed properly by boxes layer

[tschaub]

clearMarkers only removes markers with icons. As reported by thebigdog on #openlayers, this doesn't treat box markers, and the box layer doesn't override clearMarkers.

[tschaub]

Not sure this is valid - as it looks to me that box markers are really only intended to be used with a box layer.

Anybody else who uses markers want to comment?

[crschmidt]

Box Markers should only be on a box layer. However, the clearMarkers for the box layer is not overridden from the default, so I'll change the ticket description to be for that instead.

thebigdog: If you're trying to combine boxes and markers, you're probably doing something against design: in fact, the whole of the boxes layer is probably against design at this point, given that we have the vector layer.

[crschmidt]

Looked at the code, and realized that clearMarkers doesn't need subclassing, because it just calls removeMarkers, which is subclassed property, which means that this is, indeed, 'invalid'.