implement client server connection tracking persistence

WebfrontCore/ViewComponents/ProfileMetaListViewComponent.cs

@@ -66,7 +66,8 @@ namespace WebfrontCore.ViewComponents
                     case MetaType.ReceivedPenalty:
                         meta = await metaService.GetRuntimeMeta<ReceivedPenaltyResponse>(request, metaType.Value);
                         break;
-                    default:
+                    case MetaType.ConnectionHistory:
+                        meta = await metaService.GetRuntimeMeta<ConnectionHistoryResponse>(request, metaType.Value);
                         break;
                 }
             }

WebfrontCore/ViewComponents/ServerListViewComponent.cs

@@ -59,7 +59,7 @@ namespace WebfrontCore.ViewComponents
                     ID = server.EndPoint,
                     Port = server.Port,
                     Map = server.CurrentMap.Alias,
-                    ClientCount = server.ClientNum,
+                    ClientCount = server.Clients.Count(client => client != null),
                     MaxClients = server.MaxClients,
                     GameType = server.Gametype,
                     PlayerHistory = server.ClientHistory.ToArray(),