Add leaflet / map directive

Use it with geohashgrid,
use a local template like this : 
&lt;div &gt;
	&lt;div style=&quot;height:20px&quot; /&gt;
	&lt;div style=&quot;position:absolute;overflow:hidden;width:100%;height:100%&quot;&gt;
	&lt;div mapgeohash data=&quot;agg.buckets&quot; 
		mapid=&quot;YOUR LEAFLET MAP PROVIDER HERE&quot; 
		center=&quot;[46.853,3.823]&quot;
		zoom=&quot;5&quot;&gt;
                &lt;/div&gt;
	&lt;/div&gt;
&lt;/div&gt;