L.Control.Layers are now scrollable

Added .css
.leaflet-control-layers {
		box-shadow: 0 1px 7px rgba(0,0,0,0.4);
		background: #f8f8f9;
		-webkit-border-radius: 5px;
		border-radius: 5px;
		overflow: overlay;
		max-height: 200px;
	}