Create export.php

[pdtynan]

There isn't even a stub. See the spec at https://drive.google.com/drive/folders/0B-aMzFGhQdHZSjQ0Z3h5T3FWRXM?usp=sharing.

[pdtynan]

See notes on Preview. Export needs to send out a link with as a Get that will tell Preview that it is running stand alone or not.

[pdtynan]

Also, if the user wants to move it to their system, Export needs to copy Preview.php and all assets to a new folder. Then it must search the files for the present path and replace it with the path the user will use unless I can make it work whenever it is planted.