Add advisors-only page to review all entries at once and edit one's vote

[akien-mga]

The platform was intended for mass voting initially so you can't choose videos to rate and can't do advanced editing of your past vote (aside from going all the way back and revoting on everything if you want to change your first vote).

Let's not challenge that for now, but for privileged advisors who currently make the selection, it would be nice if they had access to such an overview. Since we're a small contingent, how we rate the entries comparatively with each other is quite impactful and thus we'll likely want to edit some of our favorites to fully reflect what would be our "all-five" selection.