what is this?

I'm actually suprised the foot pump for the washer didn't raise more questions for you.
I've actually had to fix the passenger side door in mine. I made a bracket out of aluminum and threaded two machine screws into it spaced the same as where the rivets are. Install the bracket from the inside, slide the hinge on the screws from the outside and nut 'er up. Does it look stock? Nope. Does it work? Yep.

I'll have to do that- I busted the driver side one in my Duster off a couple weeks ago- I guess it didn't like 10 years or so without moving lol.