Council motions for approving treasury proposals (#694)

* Treasury in runtime, generic approve/reject

* Add logic for council origin

* Add tests.

* Configurable number of members in EnsureMembers

* Fix grumbles

* Fix spelling

* Comment

substrate/demo/cli/src/lib.rs

@@ -51,7 +51,7 @@ use std::sync::Arc;
 use demo_primitives::{AccountId, Hash};
 use demo_runtime::{Block, BlockId, GenesisConfig,
 	BalancesConfig, ConsensusConfig, CouncilConfig, DemocracyConfig, SessionConfig,
-	StakingConfig, TimestampConfig};
+	StakingConfig, TimestampConfig, TreasuryConfig, Permill};
 use futures::{Future, Sink, Stream};
 use tokio::runtime::Runtime;
 use demo_executor::NativeExecutor;
@@ -211,6 +211,12 @@ pub fn run<I, T>(args: I) -> error::Result<()> where
 		timestamp: Some(TimestampConfig {
 			period: 5,					// 5 second block time.
 		}),
+		treasury: Some(TreasuryConfig {
+			proposal_bond: Permill::from_percent(5),
+			proposal_bond_minimum: 1_000_000,
+			spend_period: 12 * 60 * 24,
+			burn: Permill::from_percent(50),
+		}),
 	};
 
 	let client = Arc::new(client::new_in_mem::<NativeExecutor<demo_executor::Executor>, Block, _>(executor, genesis_config)?);