Bug 7760: Add unique ids and a module class to all acquisitions pages

Bug 7760: Add unique ids and a module class to all acquisitions pages

This is the first patch for bug 7760 and touches all pages in acquisitions.
This adds a unique id "acq_<filename>" and a class "acq" to the body tag of
each page in acquisitions.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>