[ADD] added get lobby for users method

Client/ViewModels/ViewModel.cs

@@ -55,9 +55,6 @@ namespace Client
             wantToBeHost = true;
             wantToBeHostId = id;
             client.OnLobbiesReceivedAndWaitingForHost = hostLobbiesReceived;
-            // lobby id krijgen waarvan je host bent
-            // wachten totdat list van lobbies is gekomen
-            // uit die list de id zoeken en die joinen
 
         }
 

Server/Models/ServerCommunication.cs

@@ -121,6 +121,18 @@ namespace Server.Models
             }
         }
 
+        public Lobby GetLobbyForUser(User user)
+        {
+            foreach (Lobby l in lobbies)
+            {
+                if (l.Users.Contains(user))
+                {
+                    return l;
+                }
+            }
+            return null;
+        }
+
         public void AddToLobby(Lobby lobby, User user)
         {
             foreach (Lobby l in lobbies)