[fixed] Quirky/Confusing glTF export process (and more)

[markie]

I fixed this in the file selector and in my tests this weird behaviour.

Sweet

I just checked and it doesn't matter if the textures are internal ou external. If we choose the glTF format as output this packed image is created to be sent with the other files.

I just double checked and you are right about how all the files are created.
I think i just got bewildered because it's a little different for .glb (binary) file, where all images packed inside. Probably mixed them up somehow.

And yeah, it does make sense that textures are not being exported because there is nothing to export since they are not inside the wings file.