Add check for duplicate barcode template in the MIPs library registration

[Nicklas Nordborg]

In the MIPs library registration wizard it is important that the correct "Barcode template" is selected. Otherwise it will be impossible to merge multiple plates into a single pool.

However, since the first template (BDC_plate1_v1) is always selected by default it is very easy to just click "Register" without really checking that the correct plate is selected.

To prevent this from happening there are some improvements:

• The selection list should not have a default item selected
• The wizard should check if there are other plates (that has not yet been pooled) and display a warning message if the same template is selected. It should be possible to bypass the warning by using the "confirm by checking the checkbox" pattern used by other wizards.

[Nicklas Nordborg]

In 5754:

References #1202: Add check for duplicate barcode template in the MIPs library registration

The "Barcode template" list is unselected to begin with so that the user is forced to make a specific selection.

[Nicklas Nordborg]

In 5755:

References #1202: Add check for duplicate barcode template in the MIPs library registration

Other MIPs plates that has not yet been pooled are now loaded in the MIPs library registration so that a warning message can be displayed if the same barcode template is selected more than once. It is still possible to register but it requires the extra "checkbox verification" step.