Typo corrected ou->or
added files: 01_wallabag_unterstuetzen, 02_Herunterladen_und_installieren, 03_den_ersten_Artikel_speichern, 14_Versteckte_Einstellungen
Rename 03_den_ersten_Artikel_speichern.md to 03_Den_ersten_Artikel_speichern.md
Merge pull request #7 from Marmo/master

Translated remaining files en->de