* Move all client usages into trusted_client
* Move confirmed hash method to trusted client
* Tree route and logs encapsuluted
* Remove not used method for keys sharing
* NodeKeyPair renamed and moved to trusted client
* Use public key error in trusted client
* Move contract address definition into trusted client
* Block id and number types from ethcore wrapped
* Trusted client renamed to more general Blockchain
* Trusted client implementation moved to parity code
* Move node key pair under secret store feature as well
* Registar crate removed from deps
* Accounts feature removed from secret store
* Fix after merge
* Blockchain renamed to SecretStoreChain
* Module documentations added
