* EC math functions

* moved math funs -> Secret methods

* TEMP: Bind to 0.0.0.0, don't check Origin

* More CLI options for IPFS

* CORS and Hosts filtering

* Allow current interface as origin

* Correctly handle CORS settings

* fix grumbles

* 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