Sensible locking for staking and council. (#3050)

* Sensible locking for staking and council.

* Bump.

substrate/srml/elections/src/lib.rs

@@ -777,7 +777,7 @@ impl<T: Trait> Module<T> {
 			&who,
 			locked_balance,
 			T::BlockNumber::max_value(),
-			WithdrawReasons::all()
+			WithdrawReasons::except(WithdrawReason::TransactionPayment),
 		);
 
 		<VoterInfoOf<T>>::insert(