Bug 5365: Make more clear how to reopen a basket in a basket group

Bug 5365: Make more clear how to reopen a basket in a basket group

The "reopen basket" button will be visible but disabled if the basket
cannot be reopened. A tooltip is attached to the button to add more
information.

Note that the export button is still hidden, would it makes sense to
display it (visible and active)?

Test plan:
- Create a basket
- Close it
- Go to the basket detail view
=> The reopen button should be displayed and enabled

- Attach it to a basket group
- Go to the basket detail view
=> The reopen button should be displayed but disabled

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>