Update Localizable.strings

Changed the German translation for the screen layouts to „Horizontal“ (Report), „Vertikal“ (Condensed) and „Widescreen“ (Unified) because I think the current names can be misleading. Not 100% sure about Widescreen. Fullscreen could be misleading too but it's closer to what I think would fit.
Merge pull request #176 from jfml/patch-1

Update Localizable.strings