移除user time_zone, 统一使用submission_number和accepted_number字段

contest/models.py

@@ -64,14 +64,14 @@ class Contest(models.Model):
 class ContestRank(models.Model):
     user = models.ForeignKey(User)
     contest = models.ForeignKey(Contest)
-    total_submission_number = models.IntegerField(default=0)
+    submission_number = models.IntegerField(default=0)
 
     class Meta:
         abstract = True
 
 
 class ACMContestRank(ContestRank):
-    total_ac_number = models.IntegerField(default=0)
+    accepted_number = models.IntegerField(default=0)
     # total_time is only for ACM contest total_time =  ac time + none-ac times * 20 * 60
     total_time = models.IntegerField(default=0)
     # {23: {"is_ac": True, "ac_time": 8999, "error_number": 2, "is_first_ac": True}}
@@ -92,7 +92,7 @@ class OIContestRank(ContestRank):
         db_table = "oi_contest_rank"
 
     def update_rank(self, submission):
-        self.total_submission_number += 1
+        self.submission_number += 1
 
 
 class ContestAnnouncement(models.Model):