Upgrade to substrate 2.0.0 (#173)

* Upgrade to substrate 2.0.0

* WIP implement Subcommand manually (see https://github.com/paritytech/substrate/pull/6894#issuecomment-676060197)

* Add pallet-staking/std to the std feature

* Sort out the subcommand impl

* Sort out the module index (ty @ascjones)
Sort out the RefCount type (ty @dvc94ch)
Random tweaks to make test-node more similar to the vanilla node-template

* obey the fmt

* cleanup

* more cleanup

test-node/runtime/src/lib.rs

@@ -169,14 +169,16 @@ pub fn native_version() -> NativeVersion {
     }
 }
 
+const AVERAGE_ON_INITIALIZE_WEIGHT: Perbill = Perbill::from_percent(10);
 parameter_types! {
     pub const BlockHashCount: BlockNumber = 2400;
     /// We allow for 2 seconds of compute with a 6 second average block time.
     pub const MaximumBlockWeight: Weight = 2 * WEIGHT_PER_SECOND;
     pub const AvailableBlockRatio: Perbill = Perbill::from_percent(75);
     /// Assume 10% of weight for average on_initialize calls.
-    pub MaximumExtrinsicWeight: Weight = AvailableBlockRatio::get()
-        .saturating_sub(Perbill::from_percent(10)) * MaximumBlockWeight::get();
+    pub MaximumExtrinsicWeight: Weight =
+        AvailableBlockRatio::get().saturating_sub(AVERAGE_ON_INITIALIZE_WEIGHT)
+        * MaximumBlockWeight::get();
     pub const MaximumBlockLength: u32 = 5 * 1024 * 1024;
     pub const Version: RuntimeVersion = VERSION;
 }
@@ -226,10 +228,6 @@ impl frame_system::Trait for Runtime {
     type AvailableBlockRatio = AvailableBlockRatio;
     /// Version of the runtime.
     type Version = Version;
-    /// Converts a module to the index of the module in `construct_runtime!`.
-    ///
-    /// This type is being generated by `construct_runtime!`.
-    type ModuleToIndex = ModuleToIndex;
     /// What to do if a new account is created.
     type OnNewAccount = ();
     /// What to do if an account is fully reaped from the system.
@@ -238,6 +236,8 @@ impl frame_system::Trait for Runtime {
     type AccountData = pallet_balances::AccountData<Balance>;
     /// Weight information for the extrinsics of this pallet.
     type SystemWeightInfo = ();
+    /// Provides information about the pallet setup in the runtime.
+    type PalletInfo = PalletInfo;
 }
 
 impl pallet_aura::Trait for Runtime {
@@ -259,6 +259,7 @@ impl pallet_grandpa::Trait for Runtime {
     )>>::IdentificationTuple;
 
     type HandleEquivocation = ();
+    type WeightInfo = ();
 }
 
 parameter_types! {
@@ -286,6 +287,7 @@ impl pallet_balances::Trait for Runtime {
     type ExistentialDeposit = ExistentialDeposit;
     type AccountStore = System;
     type WeightInfo = ();
+    type MaxLocks = ();
 }
 
 parameter_types! {