Create a thumbnail when objects get uploaded.
Ignore warning when converting HTML 4.0, such as unknown tags.
Show the JPG datastream for a single page when no viewer is present.

Also have Pages generate images from their management interface.
Delete pages when deleting a book.
Display messages after running page manage actions.
Require Tesseract 3.2 or greater, generate HOCR rather than RAW_HOCR/ENCODED_OCR

Versions of Tesseract prior to 3.2 generated HTML 4.01 and for some files it
would generate invalid HTML 4.01 when creating HOCR. Setting the restriction
that this module use Tesseract 3.2 or greater resolves these problems.

Tesseract 3.2 generates valid XHTML so it need not be encoded, also there is
more relevant coordinate information generated by it.

This committed changes the DC_COMPOSITE_MODEL for pages and updates the admin
form to state the required version and if it is installed.
Cleaner error logs.
Forgot the 0 for minor version.
Index page on ingest from 0.
Fix for change to islandora permissions handling.
islandora_get_viewer() now takes an array as its first parameter.
Set the Title for the manage overview and page ingest.
Include HOCR in the list of derived sources.
Code clarity
Merge pull request #6 from nigelgbanks/7.x-fixes

Create a thumbnail when objects get uploaded.