Image format changes

Hi all,

I'm sorry for the late notice but I just got word from our User
Experience (UX) group that they are testing a change to stop accepting
GIF images for the avatar (profile_image) and profile wallpaper
(profile_background_image). There has been a bunch of trouble with
image uploading discussed on the list here and while much of it seems
to be the PHP content-type bug, the others are GIF images that fail
processing. We have to verify the images and create the thumbnail
version and GIF images consistently fail at that and report 'possibly
too large' because we can't tell what went wrong.
There is no plan to remove existing GIF images. You'll still be
able to use JPEG (image/jpeg and image/jpg) and PNG (image/png)
images, but new GIF images will no longer be accepted. This code
should be ready within the next week, so if your code is automatically
dealing with images you may want to start disallowing GIFs. Again, I'm
sorry for the late notice on this … snuck up on me as well.

Thanks;
— Matt Sanford / @mzsanford