refactor: heating temperature step changed

* step changed to 0.1
* added processing of long presses on thermostats in the dashboard

src_data/scripts/utils.js

@@ -849,4 +849,8 @@ function dec2hex(i) {
   }
   
   return hex.toUpperCase();
+}
+
+function constrain(amt, low, high) {
+  return ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)));
 }