Via Tender: Don’t default the ?language on image requests

Assigned to Tender discussion #342. As reported in Tender:

I want to get the images of the the movie Clash of the Titans (id 18823) by using that url:
http://api.themoviedb.org/3/movie/18823/images?api_key=*myKey*

and i get this result:
{"id":18823,"backdrops":[],"posters":[]}

But when i lookup the movie in my browser i can see that there are backdrops and posters.
This is only one example. I have the same problem with many other movies.
In API 2.1 it works fine.