Draft: 4.(balance_tracker) Addicional reward tracking, more optimalization of processing functions

db/btracker_app.sql

@@ -63,8 +63,7 @@ CREATE TABLE IF NOT EXISTS btracker_app.current_account_vests
 (
   account INT NOT NULL,
   received_vests BIGINT DEFAULT 0,     
-  delegated_vests BIGINT DEFAULT 0,     
-  tmp BIGINT,     
+  delegated_vests BIGINT DEFAULT 0,         
 
   CONSTRAINT pk_temp_vests PRIMARY KEY (account)
 ) INHERITS (hive.btracker_app);