Ref: https://github.com/Gustav-Simonsson/go-ethereum/commit/21c4c155ee68890a069654dcc5bc083a867f65cd

Remove old logger from RPC pkg

Add privkey loading to block tests

And output as quantity, not data

General fixes

* Changed CalcGasLimit to no longer need current block
* Added a gas * price + value on tx validation
* Transactions in the pool are now re-validated once every X

eth, eth/downloader: improve downloader and remove asynchronousness

Fix ignore of unexpected files in key dir

Transactions will be invalidated when the tx.gas_limit > block.gas_limit

core: fixed wildcard topic filters. Closes #725

CLI and JS admin changes

Simpler "welcome"