Comment 11 for bug 605174

I'm pretty certain we don't want GPX generation to vary with user locale. As there are also quite a few potential issues here, I think the smallest/easiest fix is to just pretend we're in the us.

(The supplied patch fixes what this issue seems to have become. There seems to be a few other problems with track submission that I'll try to investigate and write bugs for, from the top of my head those includes possible track truncation and lack of error message on bad credentials as well as a RFE to trim the username before submitting.)