Bug 9674 - Replace YUI buttons and menu on acquisitions pages with Bootstrap

Bug 9674 - Replace YUI buttons and menu on acquisitions pages with Bootstrap

This patch converts the toolbar on acquisitions pages to Bootstrap,
replacing YUI button code with Bootstrap markup.

To test, view acquisitions pages and confirm that buttons look correct
and work correctly:

- acqui-home.pl (Acquisitions home page)
- booksellers.pl (Acquisitions -> Vendor search)
- supplier.pl (Acquisitions -> Vendor search -> Vendor)
- aqcontract.pl (Acquisitions -> Vendor search -> Vendor -> Contracts)
- uncertainprice.pl (Aquisitions -> Vendor search -> Vendor -> Uncertain
  prices)

View these pages for vendors with and without orders.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Buttons works. No errors.
Tested vendors with and without orders (delete button in last case)

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works nicely, changes are consistent.
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>