* Integrates new gossip system into Polkadot (#166)

* new gossip validation in network

* integrate new gossip into service

* Fix build

* Fix claims module

* fix warning

* update to latest master again

* update runtime

* Add claims.

* Failing build

* Updatee to latest substrate, fix tests

* Remove unneeded

* Introduce tests with real work sig

* Use right 64 bytes of pubkey to get eth addr

* Fix for eth sig

* Fix build

* Fix wasm

* Use new externs for eth crypto.

* Bump spec version

* New runtime

* Add claims.

* Failing build

* Updatee to latest substrate, fix tests

* Remove unneeded

* Introduce tests with real work sig

* Use right 64 bytes of pubkey to get eth addr

* Fix for eth sig

* Fix build

* Fix wasm