v3: fix cron middleware, remove unused code from shared

common/script/libs/silver.js

@@ -2,6 +2,8 @@
 Silver amount from their money
  */
 
+// TODO move to client
+
 module.exports = function(num) {
   if (num) {
     return ("0" + Math.floor((num - Math.floor(num)) * 100)).slice(-2);