Fix some of the duplicated PSTRs, saving 500bytes of flash with LCD on.

Marlin/ultralcd.cpp

 #define MENU_ITEM(type, label, args...) do { \
     if (_menuItemNr == _lineNr) { \
         if (lcdDrawUpdate) { \
+            const char* _label_pstr = PSTR(label); \
             if ((encoderPosition / ENCODER_STEPS_PER_MENU_ITEM) == _menuItemNr) { \
-                lcd_implementation_drawmenu_ ## type ## _selected (_drawLineNr, PSTR(label) , ## args ); \
+                lcd_implementation_drawmenu_ ## type ## _selected (_drawLineNr, _label_pstr , ## args ); \
             }else{\
-                lcd_implementation_drawmenu_ ## type (_drawLineNr, PSTR(label) , ## args ); \
+                lcd_implementation_drawmenu_ ## type (_drawLineNr, _label_pstr , ## args ); \
             }\
         }\
         if (LCD_CLICKED && (encoderPosition / ENCODER_STEPS_PER_MENU_ITEM) == _menuItemNr) {\

Marlin/ultralcd_implementation_hitachi_HD44780.h

     lcd.print('/');
     lcd.print(itostr3left(tTarget));
     lcd_printPGM(PSTR(LCD_STR_DEGREE " "));
+    if (tTarget < 10)
+        lcd.print(' ');
 
 # if EXTRUDERS > 1 || TEMP_SENSOR_BED != 0
     //If we have an 2nd extruder or heated bed, show that in the top right corner
     lcd.print('/');
     lcd.print(itostr3left(tTarget));
     lcd_printPGM(PSTR(LCD_STR_DEGREE " "));
+    if (tTarget < 10)
+        lcd.print(' ');
 # endif//EXTRUDERS > 1 || TEMP_SENSOR_BED != 0
 #endif//LCD_WIDTH > 19
 
     lcd.print('/');
     lcd.print(itostr3left(tTarget));
     lcd_printPGM(PSTR(LCD_STR_DEGREE " "));
+    if (tTarget < 10)
+        lcd.print(' ');
 #  else
     lcd.setCursor(0,1);
     lcd.print('X');