Add latest symlink in downloads (Fixes #2835)

update_latest.sh

@@ -14,5 +14,6 @@ ln -sf --no-target-directory ../downloads/$version latest/directory
 for f in $(ls "downloads/$version/"); do \
     ln -sf --no-target-directory "../downloads/$version/$f" latest/$(echo $f | sed -e "s@-$version@@")
 done
+ln -sf --no-target-directory "downloads/$version" "downloads/latest"
 echo -n "$version" > latest/version