🔨 Switch Profile to use useOvermind

[MichaelDeBoey]

Follow-up of #2729

Things I did extra:

• Change profileMounted's signature to accept a string instead of { username: string }, because it only has 1 argument
• Put all styles into the elements.ts file
• Fix Profile's props by using react-router-dom's RouteComponentProps generic instead of hardcoding it
• Export Profile by a named export instead of a default export

[lbogdan]

Build for latest commit 78e85ee is at https://pr3352.build.csb.dev/s/new.

[SaraVieira]

Looks good! Thank you!

[MichaelDeBoey]

With pleasure! 🙂