Added new trasnslatable labels.

* Added MSG_END_HOUR and MSG_END_MINUTE labels to all language files.
* Available translations:
  EN, FR, DE, ES, IT, PT, PT-BR.

Marlin/Marlin_main.cpp

@@ -843,7 +843,7 @@ void get_command()
         int hours, minutes;
         minutes=(t/60)%60;
         hours=t/60/60;
-        sprintf_P(time, PSTR("%i hours %i minutes"),hours, minutes);
+        sprintf_P(time, PSTR("%i "MSG_END_HOUR" %i "MSG_END_MINUTE),hours, minutes);
         SERIAL_ECHO_START;
         SERIAL_ECHOLN(time);
         lcd_setstatus(time);