Resolves: fdo#76692 LightProof: Italian translation too long in options

I also tested with French UI and German UI which had some pbs too
Also, I updated the tabindex

Change-Id: I861bea9ee2118ec4c2a698f64c03c912281447c0
(cherry picked from commit d478664ac0a8e8997d8d17a76a39d2704f7a254d)