Merge branch 'develop' into develop-2.1

Conflicts:
	netbox/ipam/models.py
	netbox/netbox/settings.py
	netbox/templates/dcim/inc/interface.html

netbox/extras/api/customfields.py

@@ -49,6 +49,10 @@ class CustomFieldsSerializer(serializers.BaseSerializer):
 
             # Validate selected choice
             if cf.type == CF_TYPE_SELECT:
+                try:
+                    value = int(value)
+                except ValueError:
+                    raise ValidationError("{}: Choice selections must be passed as integers.".format(field_name))
                 valid_choices = [c.pk for c in cf.choices.all()]
                 if value not in valid_choices:
                     raise ValidationError("Invalid choice for field {}: {}".format(field_name, value))

netbox/extras/models.py

@@ -332,7 +332,7 @@ def image_upload(instance, filename):
     path = 'image-attachments/'
 
     # Rename the file to the provided name, if any. Attempt to preserve the file extension.
-    extension = filename.rsplit('.')[-1]
+    extension = filename.rsplit('.')[-1].lower()
     if instance.name and extension in ['bmp', 'gif', 'jpeg', 'jpg', 'png']:
         filename = '.'.join([instance.name, extension])
     elif instance.name:

netbox/extras/views.py

@@ -25,7 +25,7 @@ class ImageAttachmentEditView(PermissionRequiredMixin, ObjectEditView):
 
 
 class ImageAttachmentDeleteView(PermissionRequiredMixin, ObjectDeleteView):
-    permission_required = 'dcim.delete_imageattachment'
+    permission_required = 'extras.delete_imageattachment'
     model = ImageAttachment
 
     def get_return_url(self, request, imageattachment):