Bug 10032: (follow-up) Move title attribute to button container

Bug 10032: (follow-up) Move title attribute to button container

This patch modifies the "Close basket" button markup so that the title
attribute on a disabled button is added to the button wrapper <div>
instead of the <a> tag. This allows the title attribute tooltip to
appear when the cursor is hovered over the button.

To test, follow the original patch's test plan and confirm that when the
"Close basket" button is disabled, hovering the mouse over the button
triggers the title attribute tooltip.

Signed-off-by: Charlotte Cordwell <charlotte.cordwell123@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>