Fixed the "You must be logged in first" response from AJAX checkRequestIsValid call.
Demo driver fixes: don't allow holds or storage retrieval requests when not logged in, and handle dates properly when placing a storage retrieval request.
Fixed a couple of comments and the details array name in placeStorageRetrievalRequest.
Merge pull request #85 from KDK-Alli/callslip2

Demo driver fixes and an additional checkRequestIsValid fix