Bug 9641 - Replace YUI button on the Koha news management page with Bootstrap

Bug 9641 - Replace YUI button on the Koha news management page with Bootstrap

This patch converts the toolbar include file used by the Koha news
editor to Bootstrap, replacing YUI button and menu code with Bootstrap
markup.

To test, open the Koha news editor and test the "New entry" button. It
sould look correct and work correctly.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: The button works and looks correct. 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>