Geomap: legend enhancements

Would be easier to read if you spanned objects over multiple lines (so one line per key/value pair). Also you don't need the quote on the key unless it is not a valid JS property name (e.g., using dashes). So something like this:
```js
symbolItems.push({
	id: spanId,
	feature: layer.features[ 0 ],
	"symbolizer": symbolizer
});
```