Bug 11946 - add table sorters to label batches

Bug 11946 - add table sorters to label batches

When viewing batches of titles in the label creator module the table is
not sortable. This patch adds table sorting.

The patch also makes some corrections of invalid markup and moves
informational/error messages to the top of the page rather than in a
sidebar. This change lets the table and sorting controls expand into a
wider space.

To test, go to Tools -> Labels -> Manage label batches. View an existing
batch or create a new batch and populate it with items. Table sorting
controls should work correctly.

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Solves 1/2 of this bug which is to add the sorters to labels, the original
request was to add this to patron cards as well.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, passes all tests and QA script.
Template could be improved forther by showing
the itemtype description instead of the code in the table.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>