Fixed issue with verbose_name length with django <1.8

Author: Ross Mechanic

simple_history/tests/external/models/model2.py

@@ -12,7 +12,7 @@ class Meta:
         app_label = 'external'
 
 
-class TrackedAbstractBaseExternal(models.Model):
+class AbstractExternal(models.Model):
     history = HistoricalRecords(inherit=True)
 
     class Meta:

simple_history/tests/models.py

@@ -6,7 +6,8 @@
 from simple_history import register
 
 from .custom_user.models import CustomUser as User
-from .external.models.model2 import TrackedAbstractBaseExternal
+from .external.models.model2 import AbstractExternal
+
 
 class Poll(models.Model):
     question = models.CharField(max_length=200)
@@ -341,7 +342,7 @@ class UntrackedConcreteBase(models.Model):
     pass
 
 
-class TrackedConcreteBaseExternal(TrackedAbstractBaseExternal):
+class TrackedConcreteBaseExternal(AbstractExternal):
     name = models.CharField(max_length=50)
 
     class Meta:

simple_history/tests/tests/test_admin.py

@@ -572,7 +572,7 @@ def test_history_form_view_getting_history_abstract_external(self):
                 admin.history_form_view(request, obj.id, history.pk)
 
         context = {
-            # Verify this is set for history object not poll object
+            # Verify this is set for history object
             'original': history.instance,
             'change_history': True,