Our comments are pretending to be plain text even when formatting
is used. The needed HTML elements are all there, but reset.css
prevents the styles from being shown.

Assigning this to myself.

Comments to MediaEntry objects should be possible

I think we don't need to do complicated threading for now. Just
comments which are paginated. Restricting to users registered on
that site for now is good enough. We'll want more than that
eventually, but for now it's okay.


-  Just simple flat comments, no threading (yet)
-  Just comments by logged in, active users
-  pagination of comments! Sorted by comment time, obviously.
-  Don't embed the comments, make the comments link back to the
   MediaEntries via their ObjectIds

That's it :)