Add Handle to member ratings page

Let's click��link of my SRM rating graph��- you'll see, that the handle name "square1001" is nowhere in this page.

It's confusing whose rating graph it is, and the current only way to see is to see the link of the page. We need to add the member handle to this page.

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Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/3465