Bug 9623 - Replace YUI button on authority types administration page with Bootstrap

Bug 9623 - Replace YUI button on authority types administration page with Bootstrap

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

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

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Work as described. 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>