Collator for the "adder" (formerly basic-add) parachain and various small fixes (#438)

* update basic_add wasm

* wasm feature and collator feature

* move test parachains around a little

* fix wasm build for basic_add

* move basic_add to adder, introduce README

* minimal basic_add collator

* ensure collator messages are sent in the right order

* more logging

* route consensus statements to all peers

* minor bugfixes for parachains

* genesis builder accounts for parachain heads

* fix parachains tests

* targets for txpool

* tweak runtime + collator

* fix version in adder-collator

* consistency for overflowing

* adjust comment

* fix stable test run

* remove dummy registration test

* final grumbles

polkadot/service/src/lib.rs

@@ -212,7 +212,7 @@ pub fn new_full(config: Configuration, executor: TaskExecutor)
 			consensus_net,
 			service.extrinsic_pool(),
 			executor,
-			::std::time::Duration::from_millis(4000), // TODO: dynamic
+			::std::time::Duration::from_secs(4), // TODO: dynamic
 			key,
 		))
 	} else {
@@ -302,13 +302,13 @@ impl<B, E, A> network::TransactionPool<Block> for TransactionPoolAdapter<B, E, A
 				Err(e) => match *e.kind() {
 					transaction_pool::ErrorKind::AlreadyImported(hash) => Some(hash[..].into()),
 					_ => {
-						debug!("Error adding transaction to the pool: {:?}", e);
+						debug!(target: "txpool", "Error adding transaction to the pool: {:?}", e);
 						None
 					},
 				}
 			}
 		} else {
-			debug!("Error decoding transaction");
+			debug!(target: "txpool", "Error decoding transaction");
 			None
 		}
 	}