Bug 28119: Use full description in layout type selection

Bug 28119: Use full description in layout type selection

This patch changes the template for editing label layout so that a full
description of label types is shown to the user rather than brief names.

To test, apply the patch and go to Tools -> Label creator -> New ->
Layout.

- On the "Choose layout type" line you should see selections with full
  descriptions, e.g. "Only the barcode is printed."
- Choose a layout type and save the layout. Confirm that your choice was
  saved correctly.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Bug 28119: (follow-up) Remove unnecessary punctuation

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>