Describe the bug

The x509 certificate representation in the admin is broken after #131.

Let's add a failing test for this.

Steps To Reproduce
Steps to reproduce the behavior:

1. open the admin
2. have at least 1 CA and 1 cert created
3. open the details of each and scroll down
4. you should notice the problem, see the attached screenshots for reference

Expected behavior
The output should look similar to how it was showing before #131.

Let's add a failing test for this.

Screenshots

Before #131 (good):

After #131 (bad):