Added options for enabling CLKOUT.

- CLKOUT can be enabled in Radio settings and status bar.
- Fixed a typo(I believe) in ui_navigation.

firmware/application/ui_navigation.hpp

@@ -180,7 +180,7 @@ private:
 		Color::dark_grey()
 	};
 	
-	Image image_clock_status {
+	ImageButton button_clock_status {
 		{ 27 * 8, 0 * 16,  2 * 8, 1 * 16 },
 		&bitmap_icon_clk_int,
 		Color::light_grey(),
@@ -198,6 +198,7 @@ private:
 	void on_camera();
 	void on_title();
 	void refresh();
+	void on_clk();
 	
 	MessageHandlerRegistration message_handler_refresh {
 		Message::ID::StatusRefresh,