* Create new column family for local node info

* remove DBTransaction::new reliance on DB

* KeyValueDB trait

* InMemory KeyValueDB implementation

* journaldb generic over KVDB

* make most of `ethcore` generic over KVDB

* fix json tests compilation

* get all tests compiling

* implement local store (just for transactions)

* finish local store API, test

* put everything into place

* better test for skipping bad transactions

* fix warning

* update local store every 15 minutes

* remove superfluous `{}`s

* initial secret store commit

* various fixes

* license

* (sstore, secstore) -> secretstore

* marked KeyServer trait as IPC-ready

* fixed style

* ignore requests with Origin header

* fixed tests

* fixed Origin header check

* Signer - Tracking Request Provenance

* Basic UI

* Changing messages

* VecDeque::from

* Fix dapps tests

* Addressing UI grumbles

* json rpc bump

* some error message deviations

* Porting json

* Dapps

* Rpc & Ethstore

* New ethabi

* Last bunch of fixes

* Fixing last test

* Removing build script

* Adding ethcore-ipc-tests back

* Fixing grumbles

* Fixing blockchain tests (inference regression?)

* Ledger devices support

* structs for RPC types