Utilities page caching

Helps with #1977

hmi/dev/nspanel_us_code/utilities.txt

@@ -27,7 +27,7 @@ Page utilities
             printh 00
             printh FF FF FF
         
-Variable (int32) line_main_d
+Variable (int32) home_line_d
     Attributes
         ID   : 46
         Scope: local
@@ -419,7 +419,7 @@ Text group06b
         Text               :  
         Max. Text Size     : 10
     
-Slider line_main
+Slider home_line
     Attributes
         ID               : 10
         Scope            : local
@@ -536,13 +536,13 @@ Timer tm_movement
     Events
         Timer Event
             //line_main
-            line_main.val+=line_main_d.val
-            if(line_main.val>=line_main.maxval)
+            home_line.val+=home_line_d.val
+            if(home_line.val>=home_line.maxval)
             {
-                line_main.val=line_main.minval
-            }else if(line_main.val<=line_main.minval)
+                home_line.val=home_line.minval
+            }else if(home_line.val<=home_line.minval)
             {
-                line_main.val=line_main.maxval
+                home_line.val=home_line.maxval
             }
             //group01_line
             group01_line.val+=group01_line_d.val