Bring substrate-demo up to date (#658)

* Updating substrate-demo

* Consenus fixes

* Reverted toolchain change

* Adjusted timeout formula

* Simplfied proposal creation

* Fixed tests

* Fixed a few small issues

* 2017->2018

* Style

* More style

* Renamed demo executable to substrate

* Style

* Fixed compilation after merge

* Style

substrate/Cargo.toml

@@ -40,10 +40,16 @@ members = [
 	"substrate/test-runtime",
 	"substrate/telemetry",
 	"substrate/keystore",
+	"demo",
 	"demo/cli",
+	"demo/api",
+	"demo/consensus",
 	"demo/executor",
+	"demo/network",
 	"demo/primitives",
 	"demo/runtime",
+	"demo/service",
+	"demo/transaction-pool",
 	"subkey",
 ]
 exclude = [