Add the "to=" keyword argument to all ForeignKey, ManayToMany and OneToOne Fields.

Signed-off-by: Michael Price <loneviking72@gmail.com>

mayan/apps/common/models.py

@@ -24,8 +24,8 @@ class ErrorLogEntry(models.Model):
         max_length=128, verbose_name=_('Namespace')
     )
     content_type = models.ForeignKey(
-        ContentType, blank=True, on_delete=models.CASCADE, null=True,
-        related_name='error_log_content_type'
+        blank=True, on_delete=models.CASCADE, null=True,
+        related_name='error_log_content_type', to=ContentType,
     )
     object_id = models.PositiveIntegerField(blank=True, null=True)
     content_object = GenericForeignKey(
@@ -77,8 +77,8 @@ class SharedUploadedFile(models.Model):
 @python_2_unicode_compatible
 class UserLocaleProfile(models.Model):
     user = models.OneToOneField(
-        settings.AUTH_USER_MODEL, on_delete=models.CASCADE,
-        related_name='locale_profile', verbose_name=_('User')
+        on_delete=models.CASCADE, related_name='locale_profile',
+        to=settings.AUTH_USER_MODEL, verbose_name=_('User')
     )
     timezone = models.CharField(
         choices=zip(common_timezones, common_timezones), max_length=48,