map: clean html and css action buttons
map:fix transition css action buttons
map: fit all the markers when show the map (=add underscore lib) + fix small stuff (=undefined error)
maps: define the maxZoom at 17
map: use the local user location to display its own marker
map: display unknown location when we don't know the user location
follo create: join the follo after a creation #socket
map: create a marker when we retrieve a user location we didn't know before
map: rename distance label in dist
map: convert distance in miles regarding to user preferences