Added friendly names to serial ports, added automatic selection of Prusa's printers in the firmware updater dialog

xs/xsp/GUI.xsp

@@ -4,6 +4,7 @@
 #include <xsinit.h>
 #include "slic3r/GUI/GUI.hpp"
 #include "slic3r/Utils/ASCIIFolding.hpp"
+#include "slic3r/Utils/Serial.hpp"
 %}
 
 
@@ -19,7 +20,7 @@ void enable_screensaver()
     %code{% Slic3r::GUI::enable_screensaver(); %};
 
 std::vector<std::string> scan_serial_ports()
-    %code{% RETVAL=Slic3r::GUI::scan_serial_ports(); %};
+    %code{% RETVAL=Slic3r::Utils::scan_serial_ports(); %};
 
 bool debugged()
     %code{% RETVAL=Slic3r::GUI::debugged(); %};