Bug 14242: Use ISBN-field to automatically fill out purchase suggestions

Bug 14242: Use ISBN-field to automatically fill out purchase suggestions

Add new jQuery plugin "autofill" which transforms selected element(s)
into search fields for Google Books API and automatically fills
requested fields with search result.

Use in OPAC purchase suggestions to automatically fill out fields when
entering ISBN-number.

Test plan:
1. Run updatedatabase.pl
2. Enable system precference "OPACSuggestionAutoFill"
3. Log into OPAC and go to purchase suggestions page
4. Write a valid ISBN (such as 0-9690745-2-2 or 978-1-78416-110-1) into
   the ISBN field and click the 'search google books' button, or unfocus
   the field.
5. Title, Author, Publisher, publication year and Item Type fields should now be filled
   automatically.
6. Press "clear form" to undo - should restore all fields that the API pull
   filled to empty

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>