Added the "UserSessionsConfig" class

[ataylor32]

Description

Since the class includes verbose_name = 'User Sessions', this makes it so that the app appears in the admin as "User Sessions" instead of "User_Sessions".

Motivation and Context

Django apps' verbose names are meant to be read by humans (e.g. "Authentication and Authorization", not "Authentication_and_Authorization").

How Has This Been Tested?

I looked in the admin.

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed. ← I don't know the answer. I assume GitHub will tell me.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.69%. Comparing base (dfa4e62) to head (219bcbe).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #182 +/- ## ========================================== + Coverage 97.67% 97.69% +0.01% ========================================== Files 17 18 +1 Lines 689 694 +5 Branches 56 56 ========================================== + Hits 673 678 +5 Misses 10 10 Partials 6 6 ```

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