Scroll to the map when windows smaller than map (using zoom-in, zoom-out)

[sebfie]

Hello,

I got an issue => autoscroll when zoom-in, zoom-out if window is smaller than map :

http://angular-ui.github.io/ui-leaflet/examples/0000-viewer.html#/basic/first-example

If your window has the same size as mine, you will notice a scroll down (to the top of the div wrapping the map) on zoom-in, zoom-out.