* Don't depend directly on libp2p

* Fix bad import

* Updates for the new democracy

* Introduce progressive democracy

Also move to "master" branch of Substrate ready for continuous
sync with Substrate master.

* Copy over files

* Most network tests work

* Fix copyrights

* Strip out unneeded pallets

* Update test-runtime and remove unused network test things

* Upgrade test runtime

* Strip more things out of the test runtime

* Bump kusama impl version