Qualtrics Survey Xblock

  Author fields in Studio:
   - Display Name
   - Survey ID
   - Your University
   - Link Text
   - Parameter Name for UserID

  If Parameter Name is left blank, the anonymous student id is
  omitted from the url.

  Links to an already existing Qualtrics survey.
How about moving this comment to a docstring for the method?
```python
def test_studio_view(self):
    """
    Test that rendered HTML contains the correct link with %%USER_ID%%
    """
    xblock = self.create_xblock()
    # ...
```