Fix caching old versions of utils.js
Fix caching old versions of utils.js

simplecrypto/simplecoin_multi,simplecrypto/simplecoin_multi,sigwo/simplecoin_multi,sigwo/simplecoin_multi,simplecrypto/simplecoin_multi,sigwo/simplecoin_multi,sigwo/simplecoin_multi,simplecrypto/simplecoin_multi