* Update Substrate after repository reorganisation

* Switch back to polkadot-master

* Bump `bitvec` and `parity-scale-codec` (#591)

Also bump other dependencies, but respect semver on them.

* Update cargo files

* First round of build fixes

* update lock file

* Fix builds again

* Revert cargo file

* remove elections genesis

* Fix chain spec

* Remove imports

* Update runtime/src/lib.rs

Co-Authored-By: Gavin Wood <gavin@parity.io>

This reverts commit 89ac39fc.

* Update cargo files

* First round of build fixes

* update lock file

* Use node-rpc extensions to support account_nextIndex.

* Remove todo.

* Update lock.

* Use new srml_system_rpc crate.

* Update to substrate=master

* Update lockfile.

* Update to polkadot-master.

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>