Add translation for "Switzerland"

de/portals.php

@@ -25,3 +25,4 @@ $tlPortals['portals_in_romania'] = 'Regionale Portale in Rumänien';
 $tlPortals['portals_in_the_usa'] = 'Regionale Portale in den USA';
 $tlPortals['Worldwide'] = 'Weltweit';
 $tlPortals['about_resources'] = 'Ressourcen';
+$tlPortals['Switzerland'] = 'Schweiz';