Give renderer list of geometries so it can redraw

[crschmidt]

Because Firefox is stupid, it needs to map geometries into a local pixel space.

The cost of this is that when we get beyond that pixel space, we can't draw features.

If we could redraw the renderer contents, then we could reinit to 0,0 when we hit a limit.

At the moment, we can't do that.

Add a list of geometries to the renderer so it can.

[crschmidt]

I don't think that we have any plans to do this anymore. We may end up doing clipping, but I don't think the render is going to maintain a features list.

[crschmidt]

Reopened for the rest of #1631

[crschmidt]

Actually, this is a dupe of #1431.