Uncle blocks don't necessarily have BlockDetails, so can't get total
difficulty directly.
Closes #1057

* execution error/result limiting

* missing trailing comma

* fix executive tests

* adding original error as string to the generic transaction error

* 'mallformed'-s all around

* adding options & cli flags

* adding it to the key deriving

* removed duplicated option

Update error message

Updating dapp-wallet

Fixed connecting to local nodes on startup

* moving deps to ethcore/hyper and bumping jsonrpc-http-server version

* Validate signature in tx queue

moving deps to ethcore/hyper and bumping jsonrpc-http-server version

Updating status page. Bringing back wallet

--geth IPC compatibility

Moving dependencies to ethcore & uniforming syntax libs through all crates

Conflicts:
	Cargo.lock

update hyper branch mio

* Tidy up CLI options and make JSONRPC & webapps on by default.

* Fix test.

Fixing clippy warnings

Fixing RPC modules compatibility

Fixing hyper-mio revision