Update current server on info tab since it can change at run-time

src/controller.cpp

@@ -303,6 +303,13 @@ void Controller::getInfoThenRefresh(bool force)
     if (!zrpc->haveConnection())
         return noConnection();
 
+    // Update current server in Info Tab
+    auto current_server = Settings::getInstance()->getSettings().server;
+    ui->current_server->setText(current_server);
+
+    // no need to update sticky server because currently there is no
+    // way to change that at run-time via GUI
+
     static bool prevCallSucceeded = false;
 
     zrpc->fetchInfo([=] (const json& reply) {