fixed admin pluralization

roomlist/housing/models.py

@@ -50,6 +50,9 @@ class Address(TimeStampedModel):
     zip_code = models.IntegerField(max_length=5)
     state = models.CharField(max_length=2)
 
+    class Meta: 
+        verbose_name_plural = 'addresses'
+
     def __str__(self):              # __unicode__ on Python 2
         return self.street
 
@@ -69,6 +72,9 @@ class Class(TimeStampedModel):
     year_in_school = models.CharField(max_length=2,
                                       choices=YEAR_IN_SCHOOL_CHOICES,
                                       default=FRESHMAN)
+    class Meta: 
+        verbose_name_plural = 'classes'
+
 
     def __str__(self):              # __unicode__ on Python 2
         return str(self.year_int)