Fix the webapi tests on newer versions of Django.
Review Request #9417 - Created Dec. 2, 2017 and submitted
Some recent unit tests for API token signals introduced a second
WebAPITokenmodel registered within the
While this didn't outright break on Django 1.6, it did on newer
These new tests now import the old model, allowing for a single
registered model. This works when running the entire Djblets test suite
or the individual test modules.
It also fixes a typo in the name of the class for the signal tests.
Ran webapi unit tests on Django 1.6, 1.9, 1.10, and 1.11 without