Add back necessary storage items

runtime/src/storage.rs

-use primitives::{BlockNumber, Hash, ValidatorId};
+use primitives::{H256, BlockNumber, Hash, ValidatorId};
 use primitives::storage::well_known_keys;
 use srml_support::storage::unhashed;
+use state::{ActiveState, CrystallizedState, BlockVoteInfo};
 use super::UncheckedExtrinsic;
 use super::Digest as DigestT;
 
@@ -9,6 +10,12 @@ storage_items! {
 	pub ParentHash: b"sys:parenthash" => default Hash;
 	pub ExtrinsicsRoot: b"sys:extrinsicsroot" => default Hash;
 	pub Digest: b"sys:digest" => default DigestT;
+	pub BlockHashesBySlot: b"sys:blockhashesbyslot" => map [ u64 => H256 ];
+	pub Active: b"sys:active" => default ActiveState;
+	pub ActiveRoot: b"sys:activeroot" => default H256;
+	pub Crystallized: b"sys:crystallized" => default CrystallizedState;
+	pub CrystallizedRoot: b"sys:crystallizedroot" => default H256;
+	pub BlockVoteCache: b"sys:blockvotecache" => default map [ H256 => BlockVoteInfo ];
 }
 
 pub struct UncheckedExtrinsics;