Fix Django 1.9 deprecation warnings by adding app_label.

openedx/core/djangoapps/crawlers/models.py

@@ -9,6 +9,9 @@ from config_models.models import ConfigurationModel
 
 class CrawlersConfig(ConfigurationModel):
     """Configuration for the crawlers django app."""
+    class Meta(object):
+        app_label = "crawlers"
+
     known_user_agents = models.TextField(
         blank=True,
         help_text="A comma-separated list of known crawler user agents.",

openedx/core/djangoapps/programs/models.py

@@ -13,6 +13,8 @@ class ProgramsApiConfig(ConfigurationModel):
 
     A rename to ProgramsConfig would be more accurate, but costly in terms of developer time.
     """
+    class Meta(object):
+        app_label = "programs"
 
     marketing_path = models.CharField(
         max_length=255,