Bug 10222: Error when saving Demco label templates

Bug 10222: Error when saving Demco label templates

This patch fixes a bug whereby if you open either of the
Demco label templates (loaded by the sample data) and
click "save" without making any changes you will get an
error:

Can't bless non-reference value at C4/Creators/Profile.pm
line 92.

It also fixes another minor bug in the creator sample data.

To test:

1. Install all sample data in a clean database.
2. In the label tool, edit either of the Demco label templates.
3. Save the template and observe the error mentioned above.
4. Drop and recreate the database.
5. Apply the patch.
6. Repeate steps 1-3 and note the successful save.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit d3eef921f501634d3656b9d08abafa55b3ed6c07)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>