File card username profile hyperlink

[TyHil]

Waiting on #127 merge.

Now that we have usernames on file cards, we'll want them to be actually clickable.

Move the "created by x" text outside of the file cards clickable Link, like how the buttons at the bottom are not inside the big Link, and put the "x" text inside it's own Link with href={/profile/${username}}. Maybe also underline the text.

[SinhSinhAn]

Still waiting on merge to happen, I'll take whenever that happens