Use organizationName as airline name

Summary: With my LH pkpass the airline field was empty. Fill it with the organizationName from the pkpass.

Test Plan: Itinerary now shows "Airline: Lufthansa" instead of "Airline: "

Reviewers: vkrause

Reviewed By: vkrause

Subscribers: kde-pim

Tags: #kde_pim, #kde_itinerary

Differential Revision: https://phabricator.kde.org/D17029