Zina - checkpoint 9

In this exercise we are going to integrate maps into the MapFragment. The Map will show user’s location and location of all user’s friends. There should be also last time of update next to the friends’ location for us to know how old the information is. To receive location we must also send it over as it is a mutual interaction.
To receive location updates of friends, we are going to use a bound service. Every two to five minutes we will call the server API to request for new data and reposition markers on the map.