moved the old Quby files out, and the new files up.

There were two versions of Quby in the repo:
* the original JS version
* the new TypeScript version

The old version has finally been removed,
and moved out of the folder.

Now only the current TypeScript version remains.
test file no longer outputs err info, if there is none

If the error infomation sent to 'handleError' is empty,
then it used to get printed. Now, it does not.