Make UIName of filters from writerperfect module localizable

Change-Id: I63974d71c8aa8b4b3ede8272fd0467fa0026b1ff
Reviewed-on: https://gerrit.libreoffice.org/7491
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>