Beta Backports (#4012)

* Fix up the transaction JSON serialisation for RPC.

* Introduce to_hex() utility in bigint. Fix tests.

Conflicts:
	rpc/src/v1/tests/mocked/eth.rs
	rpc/src/v1/tests/mocked/signing.rs
	rpc/src/v1/types/block.rs
	rpc/src/v1/types/transaction.rs

* fix comment

* Fix build.

* Bump hyper

* Correct log index in transaction receipt (#3995)

* Moving logs to separate, testable function

* Adding test

* Fixing log index

* Adding transaction log index

* Fixing rpc tests

* Making interface of  a bit cleaner.

Conflicts:
	ethcore/src/client/client.rs
	ethcore/src/tests/client.rs
	ethcore/src/types/transaction.rs

* Encode networkid as a u64.

Conflicts:
	ethcore/src/types/transaction.rs

* Fixing compilation issues

* parse testnet chain as ropsten

* Removing unused import

Former-commit-id: 6782819dcfddf1858a32e88db007f2d0a8a00092

signer/src/tests/mod.rs

@@ -15,7 +15,6 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::ops::{Deref, DerefMut};
-use std::thread;
 use std::time;
 use std::sync::Arc;
 use devtools::{http_client, RandomTempPath};