Addition of content reporting

New app called "moderation" which handles the reporting, and in the future, management of incorrect records in the database.

app/moderation/models.py

@@ -0,0 +1,37 @@
+from django.conf import settings
+from django.db import models
+try:
+    from django.contrib.auth import get_user_model
+    USER_MODEL = get_user_model()
+except ImportError:
+    from django.contrib.auth.models import User as USER_MODEL
+from django.contrib.contenttypes import generic
+from django.contrib.contenttypes.models import ContentType
+
+
+DEFAULT_FLAGGING_STATUS = (
+    (1, 'Reported'),
+    (2, 'Updated by Moderator'),
+    (3, 'Deleted by Moderator'),
+    (4, 'No Action'),
+)
+FLAGGING_STATUS = getattr(settings, 'FLAGGING_STATUS', DEFAULT_FLAGGING_STATUS)
+
+
+class FlagType(models.Model):
+    name = models.CharField(max_length=200)
+    is_active = models.BooleanField(default=True)
+
+    def __unicode__(self):
+        return self.name
+
+
+class FlaggedObject(models.Model):
+    object_id = models.PositiveIntegerField()
+    object_type = models.ForeignKey(ContentType)
+    generic_obj = generic.GenericForeignKey('object_type', 'object_id')
+
+    flag_type = models.ForeignKey('moderation.FlagType', related_name='+')
+    note = models.TextField()
+    status = models.PositiveIntegerField(choices=FLAGGING_STATUS, default=1)
+    user = models.ForeignKey(USER_MODEL, related_name='+', null=True, blank=True)