Updating a content view's label returns a 200 but it should be a 400 or 422
Description of problem:
Since a content view's label is immutable, once you create one you should not be able to update its label. This works fine, but using the API to update an existing label should return a 400 HTTP status code (or perhaps 422?), but instead it is returning a 200.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Use the API layer to create a new content view
2. Use the API to update the content view's label
The label is not updated but the HTTP status code is 200.
The HTTP status code should be 400.