Bug 15411: More changes

Bug 15411: More changes

Changes to Italian and Polish sql files and catalogue help file.

TEST PLAN
---------
1) Confirm sql is valid and has Non-fiction.
   > delete from auth_vals;
   > source {appropriate file};
2) Staff -> Search -> Help
   -- Confirm Non-fiction
3) Run koha qa test tools

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jesse Weaver <jweaver@bywatersolutions.com>
(cherry picked from commit 81c9770f28d13129aa2969c4a243988a4f026a6b)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>