[Geoprisma-dev] QueryOnClick - Clear button

[Yves Moisan]

> Commited r690.
> 
> Comments welcomed.  See the doc of the widget to see what's new.  
> There's also a new QueryOnClick sample (with this widget only).

Works perfectly thank you !  Maybe it would be clearer to provide the
following in your switch case :

case "marker" that would be the default (instead of setting it to null)

IMO, it makes more sense to have a choice of (nothing, marker, all) than
(null, nothing, all) where 'null' really means 'marker'.

My 2 cents,

Yves