Bug 9642 - Replace YUI button on the patron attribute types page with Bootstrap

Bug 9642 - Replace YUI button on the patron attribute types page with Bootstrap

This patch converts the toolbar on the patron attributes administration
page to Bootstrap, replacing YUI button code with Bootstrap markup.

To test, view the patron attribute types administration page and confirm
that the "New patron attribute type" button looks correct and works
correctly.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Button looks and works correctly. No errors.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works nicely, no problems found.
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>