finish refactor cleanup

backend/app.go

@@ -139,7 +139,7 @@ func (a *App) setupMPV() error {
 }
 
 func (a *App) LoginToDefaultServer(string) error {
-	serverCfg := a.Config.GetDefaultServer()
+	serverCfg := a.ServerManager.GetDefaultServer()
 	if serverCfg == nil {
 		return ErrNoServers
 	}

backend/servermanager.go

@@ -47,7 +47,7 @@ func (s *ServerManager) ConnectToServer(conf *ServerConfig, password string) err
 	s.Server.SetPrefetchCoverCallback(s.prefetchCoverCB)
 	s.LoggedInUser = conf.Username
 	s.ServerID = conf.ID
-	s.config.SetDefaultServer(s.ServerID)
+	s.SetDefaultServer(s.ServerID)
 	for _, cb := range s.onServerConnected {
 		cb()
 	}