Turn browser autocomplete off whan arrow is pressed

Turn browser autocomplete off and use command history as soon as an arrow key is pressed allowing mobiles and tablets to keep using browser autocomplete. (#8015)

tasmota/xdrv_01_webserver.ino

@@ -216,6 +216,7 @@ const char HTTP_SCRIPT_CONSOL[] PROGMEM =
   "var hc=[],cn=0;"                       // hc = History commands, cn = Number of history being shown
   "function cH(a){"
     "var b=qs('#c1'),c=a.keyCode;"        // c1 = Console command id
+    "if(38==c||40==c){b.autocomplete='off';}"  // Arrow up or down must be a keyboard so stop browser autocomplete
     "38==c?(++cn>hc.length&&(cn=hc.length),b.value=hc[cn-1]||''):"   // Arrow Up
     "40==c?(0>--cn&&(cn=0),b.value=hc[cn-1]||''):"                   // Arrow Down
     "13==c&&(hc.length>19&&hc.pop(),hc.unshift(b.value),cn=0)"       // Enter, 19 = Max number -1 of commands in history