Bugfix/delegation reconcile (#1219)

* Passing proxy value when attempting to compound delegator reward

* Do not attempt to delegate reward to mixnode if its zero

* Additional guards against sending 0 tokens

* Removed sign of sloppiness

* Fixes to rewards and delegation events storage

* Remove block count check, epoch cannot be advanced while in progress

* Add reward compound ops to vesting contract

* Migration to remove 0 value delegationns

Co-authored-by: durch <durch@users.noreply.github.com>

validator-api/src/nymd_client.rs

@@ -157,6 +157,7 @@ impl<C> Client<C> {
         &self,
         address: String,
         mix_identity: IdentityKey,
+        proxy: Option<String>,
     ) -> Result<u128, ValidatorClientError>
     where
         C: CosmWasmClient + Sync,
@@ -164,7 +165,7 @@ impl<C> Client<C> {
         self.0
             .read()
             .await
-            .get_delegator_rewards(address, mix_identity)
+            .get_delegator_rewards(address, mix_identity, proxy)
             .await
     }