Two issue about block-scan.

[YueZh127]

• 1. When send method is transfer, the scan will hit the error.

  'Block Height: 181, Error when Promise.all(transactionPromises)',
	TypeError: txInfo.params.split is not a function
	       at transactionFormat (/home/zhengyue/github/aelf-block-scan/lib/format.js:122:38)
	       at insertOptions.transactionsDetail.txsList.map.item (/home/zhengyue/github/aelf-block-scan/index.js:290:36)
	       at Array.map (<anonymous>)
	       at Promise.all.then (/home/zhengyue/github/aelf-block-scan/index.js:289:68)
	       at process._tickCallback (internal/process/next_tick.js:68:7),

• 2. when the transaction is failed for Insufficient resource balance, the scan will hit the error.

(node:25809) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'find' of undefined
	    at formatResourceDetail (/home/zhengyue/github/aelf-block-scan/lib/formatResource.js:46:34)
	    at resourceTxs.map.item (/home/zhengyue/github/aelf-block-scan/lib/insertPure.js:101:16)
	    at Array.map (<anonymous>)
	    at insertResourceTransactions (/home/zhengyue/github/aelf-block-scan/lib/insertPure.js:100:46)
	    at insertBlockAndTxs (/home/zhengyue/github/aelf-block-scan/index.js:337:11)
	    at process._tickCallback (internal/process/next_tick.js:68:7)
	(node:25809) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
	(node:25809) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.