gamechanger updates (added events, teams). not used yet.

update requirements

gamechanger/models.py

@@ -14,12 +14,17 @@ class Account(models.Model):
     password = CharField(max_length=255)
 
 
+class Team(models.Model):
+    id = models.CharField(primary_key=True, max_length=30)
+    slug = CharField(max_length=30)
+    season_slug = CharField(max_length=30)
+
+
 class Preferences(models.Model):
     user = models.OneToOneField(
         User, on_delete=models.CASCADE, related_name="gamechanger_preferences"
     )
-    season_id = CharField(max_length=255)
-    team_id = CharField(max_length=255)
+    managed_team = models.OneToOneField(Team, on_delete=models.CASCADE)
 
     class Meta:
         verbose_name_plural = "preferences"