change Event can_clear to clear

make this a bit more general, that it can be used for more then only can

UI/ui_can.cpp

@@ -50,7 +50,7 @@ void UI_can::clear_receive_buffer()
     emit ui_changed();
 }
 
-void UI_can::can_clear()
+void UI_can::clear()
 {
     clear_send_buffer();
     clear_receive_buffer();

UI/ui_can.hpp

@@ -31,7 +31,7 @@ class UI_can : public UI_item
     json to_json(size_t id) const override;
 
     void can_send(uint32_t id, uint8_t dlc, std::array<uint8_t, 8> payload) override;
-    void can_clear() override;
+    void clear() override;
   signals:
     void send(QCanBusFrame msg);
 

UI/ui_item.cpp

@@ -168,7 +168,7 @@ void UI_item::can_send(uint32_t id, uint8_t dlc, std::array<uint8_t, 8> payload)
     UNUSED(payload);
 };
 
-void UI_item::can_clear()
+void UI_item::clear()
 {
 }
 

UI/ui_item.hpp

@@ -46,7 +46,7 @@ class UI_item : public QObject
     virtual void set_selected(size_t selected);
     virtual void set_value(double value);
     virtual void can_send(uint32_t id, uint8_t dlc, std::array<uint8_t, 8> payload);
-    virtual void can_clear();
+    virtual void clear();
 
   signals:
     void ui_changed();