Only give train items to js

src/items/itemstore.cpp

@@ -56,10 +56,15 @@ void ItemStore::jsReqNewItem()
 			{
 				if(!oldItem || *items_[i] == *oldItem)
 				{
-					if(i+1 < items_.size())
-						joystick->setItem(items_[i+1]);
-					else
-						joystick->setItem(items_[0]);
+					for(size_t j = 1; j < items_.size(); ++j)
+					{
+						std::shared_ptr<Item> item = items_[(i+j) % items_.size()];
+						if(dynamic_cast<Train*>(item.get()))
+						{
+							joystick->setItem(item);
+							break;
+						}
+					}
 					break;
 				}
 			}

src/ui/mainwindow.cpp

@@ -25,6 +25,8 @@ MainWindow::MainWindow(Microcontroller * const micro, ItemStore* items, QWidget
 	}
 
 	connect(ui->relayList, &ItemScrollBox::deleteRequest, items, &ItemStore::removeItem);
+
+	ui->pushButton_addItem->hide();
 }
 
 MainWindow::~MainWindow()

src/ui/signalwidget.cpp

@@ -34,6 +34,9 @@ SignalWidget::SignalWidget(std::weak_ptr<Item> item, QWidget *parent) :
 			});
 
 			connect(signal.get(), &Item::valueChanged, this, &SignalWidget::moveToValue);
+
+			if(!signal->hasSlow())
+				ui->radioButton_slow->hide();
 		}
 	}
 	else