Create Unit Test to Check Whether /classes page loads

[roberthuskins]

We should have some sanity tests to make sure all the pages load to prevent issues in the future. It may require a bit of refactor in /classes page, ex: split things out into components.

The unit test should render the classes page and make sure it actually loads at all. This will help prevent issues, for example if we make some unrelated npm change and it breaks the page the test can catch it.

[Monika-Sivakumar-3]

I will be working on this issue.