Simplify touchevent engine

The touch event is used only for the sleeping engine (it will be used for dimming later) and it was transferring all the json info with page name, component, entity, etc.
This was replaced by a simple random integer with no meaning other than "the screen was touched, reset the timer".

nspanel_eu_code/fan.txt

@@ -28,21 +28,17 @@ Page fan
             }
         
         Touch Press Event
-            fansetting.txt="{\"page\": \"fan\", \"component\": \"touchevent\", \"value\": \"press\", \"entity\": \""+entity.txt+"\"}"
-            printh 92
+            printh 91
             prints "touchevent",0
             printh 00
-            prints fansetting.txt,0
-            printh 00
+            prints rand,0
             printh FF FF FF
         
         Touch Release Event
-            fansetting.txt="{\"page\": \"fan\", \"component\": \"touchevent\", \"value\": \"release\", \"entity\": \""+entity.txt+"\"}"
-            printh 92
+            printh 91
             prints "touchevent",0
             printh 00
-            prints fansetting.txt,0
-            printh 00
+            prints rand,0
             printh FF FF FF
         
 Variable (string) fansetting
@@ -135,6 +131,11 @@ Slider fanslider
                 button_up.pco=10597
             }
             timer0.en=1
+            printh 91
+            prints "touchevent",0
+            printh 00
+            prints rand,0
+            printh FF FF FF
         
 Button button_up
     Attributes