torproject.org doesn't send an HSTS header
www.torproject.org does, but not torproject.org. You guys apparently tried to put torproject.org in the HSTS preload lists, but Firefox rejected it because it didn't send an HSTS header. http://mxr.mozilla.org/mozilla-central/source/security/manager/boot/src/nsSTSPreloadList.errors
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information