Maps and icones

Hello,
I bought Business Directory Theme this week and I instaleld it on a wordpress 4.1.1
I’m french and I don’t speak very well in english, if I make mystake, I’m sorry.

I have some questions and bug with the theme, if you could help me, I would be very happy.

So:
1: I use the “New Google Map” on my homepage, but, if 2 listings are near, there are 2 icones, so if there are 200 listings in the same cities, there are 200 pictures layered…
I would prefer, when I open my homepage, to see bubles or pictures with the numbers of listings in the perimeter and when I would zoom, bubles would be separate in differents groups and again and again…

2: Where can I see the list of icons: “glyphicon glyphicon-bullhorn, fa fa-search, fa fa-child, …” ?

I’have others problems but if I fix these, this will be a good beginning.

Thank you and have a good day.