Wrap program in IIFE so variables don't leak

apps/boxclk/app.js

@@ -1,3 +1,4 @@
+(function() {
   let w = g.getWidth();
   let h = g.getHeight();
   let totalWidth, totalHeight;
@@ -221,3 +222,4 @@ function touchInText(e, boxItem, boxKey) {
   Bangle.loadWidgets();
   require("widget_utils").swipeOn();
   setup();
+})();