WIP commit :
have moved the pages into the subdir "datasync" and made the main page a redirect.
I'm doing a commit now as I've just rung a library and they told me that they no longer do annual sales, now there is just a bin out the front all the time for any books that are on sale - so the sample app suddenly seems quite pointless.
Instead I'm going to do the Wordpress concept.
So this is just a backup before I go in this new direction.
do a full WP tutorial