Add MSG_LOAD_ALL and replace it a two loactions -10bytes flash

Firmware/messages.cpp

@@ -169,6 +169,7 @@ extern const char MSG_PAUSED_THERMAL_ERROR[] PROGMEM_I1 = ISTR("PAUSED THERMAL E
 #ifdef TEMP_MODEL
 extern const char MSG_THERMAL_ANOMALY[] PROGMEM_I1 = ISTR("THERMAL ANOMALY");////MSG_THERMAL_ANOMALY c=20
 #endif
+extern const char MSG_LOAD_ALL[] PROGMEM_I1 = ISTR("Load All"); ////MSG_LOAD_ALL c=18
 
 //not internationalized messages
 const char MSG_SPOOL_JOIN[] PROGMEM_N1 = "SpoolJoin"; ////MSG_SPOOL_JOIN c=13

Firmware/messages.h

@@ -179,6 +179,7 @@ extern const char MSG_PAUSED_THERMAL_ERROR[];
 #ifdef TEMP_MODEL
 extern const char MSG_THERMAL_ANOMALY[];
 #endif
+extern const char MSG_LOAD_ALL[];
 
 //not internationalized messages
 extern const char MSG_BROWNOUT_RESET[];

Firmware/ultralcd.cpp

@@ -5095,7 +5095,7 @@ static inline void load_filament_wrapper(uint8_t i){
 static void mmu_load_filament_menu() {
     MENU_BEGIN();
     MENU_ITEM_BACK_P(_T(MSG_MAIN));
-    MENU_ITEM_FUNCTION_P(_i("Load all"), load_all_wrapper); ////MSG_LOAD_ALL c=18
+    MENU_ITEM_FUNCTION_P(_T(MSG_LOAD_ALL), load_all_wrapper);
     for (uint8_t i = 0; i < MMU_FILAMENT_COUNT; i++)
         MENU_ITEM_FUNCTION_NR_P(_T(MSG_LOAD_FILAMENT), i + '1', load_filament_wrapper, i); ////MSG_LOAD_FILAMENT c=16
     MENU_END();
@@ -5175,7 +5175,7 @@ static void mmu_load_to_extruder_menu() {
     if (bFilamentAction) {
         MENU_BEGIN();
         MENU_ITEM_BACK_P(_T(MSG_MAIN));
-        MENU_ITEM_FUNCTION_P(_i("Load all"), load_to_extruder_all_wrapper); ////MSG_LOAD_ALL c=18
+        MENU_ITEM_FUNCTION_P(_T(MSG_LOAD_ALL), load_to_extruder_all_wrapper);
         for (uint8_t i = 0; i < MMU_FILAMENT_COUNT; i++)
             MENU_ITEM_FUNCTION_NR_P(_T(MSG_LOAD_FILAMENT), i + '1', load_to_extruder_wrapper, i); ////MSG_LOAD_FILAMENT c=16
         MENU_END();