Remove input "Activate entity page - TRUE/FALSE (Optional)"

The icon will be shown if any entity is assigned.
Supports #999
Supports #946

hmi/dev/nspanel_us_code/home.txt

@@ -13,9 +13,15 @@ Page home
     Events
         Preinitialize Event
             back_page_id=0
+            if(is_entitypage01>0||is_entitypage02>0||is_entitypage03>0||is_entitypage04>0)
+            {
+                vis bt_entities,1
+            }else
+            {
+                vis bt_entities,0
+            }
             vis bt_notific,is_notification
             vis bt_qrcode,is_qrcode
-            vis bt_entities,is_entities
             if(display_mode==3)
             {
                 vis left_bt_text,0
@@ -364,7 +370,22 @@ Text bt_entities
         Touch Release Event
             if(api==1)
             {
-                page entitypage01
+                if(is_entitypage01>0)
+                {
+                    page entitypage01
+                }else if(is_entitypage02>0)
+                {
+                    page entitypage02
+                }else if(is_entitypage03>0)
+                {
+                    page entitypage03
+                }else if(is_entitypage04>0)
+                {
+                    page entitypage04
+                }else
+                {
+                    vis bt_entities,0
+                }
             }
         
 Text button07