FEATURE: Fix whitespace in Leaderboard page

[sangitakunapuli]

Have you updated the title?

• [X] I have updated the issue's title.

As a...

user

I can...

view the leaderboard page without asymmetric whitespace

So that...

I can have a better leaderboard UI

Discussion

Currently the leaderboard page is left justified, and it has a lot of whitespace on the right side.

Acceptance Criteria

• [ ] When an admin or user clicks on the leaderboard page, they should not see the right whitespace
• [ ] The table should be centered and have a better UI, so it is aesthetic and easy to navigate

Implementation Todos

Frontend:

• [ ] Change the formatting of the Leaderboard table
• [ ] Feel free to change other UI aspects of the table to make it better

Testing:

• [ ] Front end tests pass and there is adequate coverage