Fixes problems when the module is enabled without OCR.

Now checks if OCR is enabled before attempting to use it.
Merge pull request #112 from nigelgbanks/7.x-fix-install-issues

Fixes problems when the module is enabled without OCR.
changed page label
Merge pull request #115 from philsogaDGI/7.x

changed page label
zipped file added in paged content module.
Merge pull request #116 from yqjiang/7.x-add-page-in-content

zipped file added in paged content module.
Add query to facilitate XACML batching for books.
Update query to conform to new structure.
Merge pull request #118 from jordandukart/7.x-XACML-batch

Add query to facilitate XACML batching for books.