extract watchinfo etc from Pebble object

src/config-page.html

@@ -10,6 +10,7 @@
       window.claySettings = $$SETTINGS$$;
       window.customFn = $$CUSTOM_FN$$;
       window.clayComponents = $$COMPONENTS$$;
+      window.clayMeta = $$META$$;
     </script>
   </head>
   <body>