add try-catch in each script processing in getStandarizedObject

This add a try-catch block when processing scripts within a transaction in getStandarizedObject.

This prevents getStandarizedObject to stop if it found a broken / malformed / unknown script with in a TX. Needed for insight and blockchain processing. Related to https://github.com/bitpay/bitcore/issues/180

Just for reference, This error appear ~ 15 times in the testnet as it is today.