Add images for public/songrequests

I guess it possible via that way:

When user request some song, we are doing api request to youtube, right? I guess that api response containt image url.

So we can insert that in DB and just load on public page.

What purpose is for such images?

Right now on public page showing image dummy for each song. So, why not?
I think we should remove that image column or show normal video preview image for users. If you want i can create PR with that feature.

There are thumbnail for each song if found.

Possible bug?
Because all my songs w/o thumbnails

Yes, its a bug