Add WeightInfo to all pallets with benchmarks. (#6575)

* Start adding weight info

* More weightinfo

* finish weight info

* more fixes

* inital update of node runtime

* fix the rest of the compilation

* update balances

* add docs

* fix balances tests

* Fix more tests

* Fix compile

* Fix pallet-evm tests

substrate/frame/elections/src/mock.rs

@@ -63,6 +63,7 @@ impl frame_system::Trait for Test {
 	type AccountData = pallet_balances::AccountData<u64>;
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
+	type SystemWeightInfo = ();
 }
 
 parameter_types! {
@@ -74,6 +75,7 @@ impl pallet_balances::Trait for Test {
 	type Event = Event;
 	type ExistentialDeposit = ExistentialDeposit;
 	type AccountStore = System;
+	type WeightInfo = ();
 }
 
 parameter_types! {
@@ -128,7 +130,7 @@ impl ChangeMembers<u64> for TestChangeMembers {
 }
 
 parameter_types!{
-	pub const ElectionModuleId: LockIdentifier = *b"py/elect"; 
+	pub const ElectionModuleId: LockIdentifier = *b"py/elect";
 }
 
 impl elections::Trait for Test {