FIX: modify for cali

1. add repeat pa name check
2. display tray icon in save page
3. incorrect extruder id for left virtual slot
4. fix crash when enter save page
jira:none

Change-Id: Iae00788094d182ae84fff2aa71fedbb35ea938c6
(cherry picked from commit be256c0a6dcdcd29a3fc97edf55435bb65858f1c)

src/slic3r/GUI/CalibrationWizard.hpp

@@ -129,6 +129,8 @@ protected:
 
     void on_device_connected(MachineObject* obj) override;
 
+    bool can_save_cali_result(const std::vector<PACalibResult> &new_pa_cali_results);
+
     bool                       m_show_result_dialog = false;
     std::vector<PACalibResult> m_calib_results_history;
     int                        cali_version = -1;