Mark strings needing translation

Marlin/Marlin_main.cpp

       SERIAL_PROTOCOLPGM("Checking... AC");
       if (verbose_level == 0) SERIAL_PROTOCOLPGM(" (DRY-RUN)");
       SERIAL_EOL;
-      LCD_MESSAGEPGM("Checking... AC");
+      LCD_MESSAGEPGM("Checking... AC"); // TODO: Make translatable string
 
       SERIAL_PROTOCOLPAIR(".Height:", DELTA_HEIGHT + home_offset[Z_AXIS]);
       if (!do_height_only) {
             SERIAL_PROTOCOL_SP(36);
             SERIAL_PROTOCOLPGM("rolling back.");
             SERIAL_EOL;
-            LCD_MESSAGEPGM("Calibration OK");
+            LCD_MESSAGEPGM("Calibration OK"); // TODO: Make translatable string
           }
           else {                                                     // !end iterations
             char mess[15] = "No convergence";
           }
           else {
             SERIAL_PROTOCOLLNPGM("Calibration OK");
-            LCD_MESSAGEPGM("Calibration OK");
+            LCD_MESSAGEPGM("Calibration OK"); // TODO: Make translatable string
             SERIAL_PROTOCOLPAIR(".Height:", DELTA_HEIGHT + home_offset[Z_AXIS]);
             SERIAL_EOL;
             serialprintPGM(save_message);

Marlin/ubl_G29.cpp

           if (ELAPSED(millis(), nxt)) {
             SERIAL_PROTOCOLLNPGM("\nZ-Offset Adjustment Stopped.");
             do_blocking_move_to_z(Z_CLEARANCE_DEPLOY_PROBE);
-            LCD_MESSAGEPGM("Z-Offset Stopped");
+            LCD_MESSAGEPGM("Z-Offset Stopped"); // TODO: Make translatable string
             ubl.restore_ubl_active_state_and_leave();
             goto LEAVE;
           }
     stepper.synchronize();
 
     SERIAL_PROTOCOLPGM("Place shim under nozzle");
-    LCD_MESSAGEPGM("Place shim & measure");
+    LCD_MESSAGEPGM("Place shim & measure"); // TODO: Make translatable string
     lcd_goto_screen(lcd_status_screen);
     echo_and_take_a_measurement();
 
 
       do_blocking_move_to_z(Z_CLEARANCE_BETWEEN_PROBES);
 
-      LCD_MESSAGEPGM("Moving to next");
+      LCD_MESSAGEPGM("Moving to next"); // TODO: Make translatable string
 
       do_blocking_move_to_xy(xProbe, yProbe);
       do_blocking_move_to_z(z_clearance);
 
       if (do_ubl_mesh_map) ubl.display_map(map_type);  // show user where we're probing
 
-      if (code_seen('B')) {LCD_MESSAGEPGM("Place shim & measure");}
-      else {LCD_MESSAGEPGM("Measure");}
+      if (code_seen('B'))
+        LCD_MESSAGEPGM("Place shim & measure"); // TODO: Make translatable string
+      else
+        LCD_MESSAGEPGM("Measure"); // TODO: Make translatable string
 
       while (ubl_lcd_clicked()) delay(50);             // wait for user to release encoder wheel
       delay(50);                                       // debounce
   bool g29_parameter_parsing() {
     bool err_flag = false;
 
-    LCD_MESSAGEPGM("Doing G29 UBL!");
+    LCD_MESSAGEPGM("Doing G29 UBL!"); // TODO: Make translatable string
     lcd_quick_feedback();
 
     ubl_constant = 0.0;
     ubl_state_recursion_chk++;
     if (ubl_state_recursion_chk != 1) {
       SERIAL_ECHOLNPGM("save_ubl_active_state_and_disabled() called multiple times in a row.");
-      LCD_MESSAGEPGM("save_UBL_active() error");
+      LCD_MESSAGEPGM("save_UBL_active() error"); // TODO: Make translatable string
       lcd_quick_feedback();
       return;
     }
   void unified_bed_leveling::restore_ubl_active_state_and_leave() {
     if (--ubl_state_recursion_chk) {
       SERIAL_ECHOLNPGM("restore_ubl_active_state_and_leave() called too many times.");
-      LCD_MESSAGEPGM("restore_UBL_active() error");
+      LCD_MESSAGEPGM("restore_UBL_active() error"); // TODO: Make translatable string
       lcd_quick_feedback();
       return;
     }
 
     memset(not_done, 0xFF, sizeof(not_done));
 
-    LCD_MESSAGEPGM("Fine Tuning Mesh");
+    LCD_MESSAGEPGM("Fine Tuning Mesh"); // TODO: Make translatable string
 
     do_blocking_move_to_z(Z_CLEARANCE_DEPLOY_PROBE);
     do_blocking_move_to_xy(lx, ly);
           lcd_return_to_status();
           //SERIAL_PROTOCOLLNPGM("\nFine Tuning of Mesh Stopped.");
           do_blocking_move_to_z(Z_CLEARANCE_DEPLOY_PROBE);
-          LCD_MESSAGEPGM("Mesh Editing Stopped");
+          LCD_MESSAGEPGM("Mesh Editing Stopped"); // TODO: Make translatable string
 
           while (ubl_lcd_clicked()) idle();
 
 
     do_blocking_move_to_xy(lx, ly);
 
-    LCD_MESSAGEPGM("Done Editing Mesh");
+    LCD_MESSAGEPGM("Done Editing Mesh"); // TODO: Make translatable string
     SERIAL_ECHOLNPGM("Done Editing Mesh");
   }