Moved the forms for manipulating multiple pages to the paged content module.

This file was basically the same in both the book solution pack and the
newspaper solution pack. Now any object that contains "page" objects,
can resuse and extend these forms.
Removed the pages view, now uses the one provided by islandora
Merge pull request #66 from nigelgbanks/7.x-manage-pages

7.x manage pages