Yes, I did it through Admin -> Customize -> Text Content/Email Templates.
Currently using v1.5.0.beta9 +102. Before that I don’t know, forgot it. If there is some kind of a Update Log please guide me how to access it?
UPDATE: I’m using Bosnian language, not English, maybe that helps.
UPDATE 2: In other topic I’ve found a fix. I edited one of the customization text and all my other customizations/email templates are back.