Bug 8820 [3.8.x] Don't show orders table if there are no orders

Bug 8820 [3.8.x] Don't show orders table if there are no orders

Reworkd for 3.8.x: Patch removes the "basket empty" message in
favor of hiding the orders table altogether when a basket has
no orders.

Other textual changes:

- Correcting capitalization according to coding guidelines
- Replacing the "Order Details" heading with the more
  succinct "Orders"

Signed-off-by: Melia Meggs <melia@bywatersolutions.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
All tests pass, template change only.

To test:
1) Create a new basket - verify 'basket empty' shows up
2) Create order line - verfiy table heading is 'Order Details'
3) Close basket, check capitalization on basket group dialog

Repeat with patch applied.
- 'basket empty' is gone
- Heading is now 'Orders'
- Capitalization on basket group dialog is correct

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>