Bug 9647 - Replace YUI buttons on Z39.50 servers administration page with Bootstrap

Bug 9647 - Replace YUI buttons on Z39.50 servers administration page with Bootstrap

This patch converts the toolbar on the Z39.50 administration
page to to Bootstrap, replacing YUI button code with Bootstrap markup.

To test, view the Z39.50 administration page and confirm that
the "New Z39.50 server" button looks correct and works correctly.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Works and looks very well. 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>