Update `Swedish` translation

Currently translated at 4.2% (7 of 164 strings)

Translation: Wiki-Bot/Dashboard
Translate-URL: https://translate.wikibot.de/projects/wiki-bot/dashboard/sv/

dashboard/i18n/sv.json

@@ -5,5 +5,15 @@
         " ",
         " ",
         " "
-    ]
+    ],
+    "rcscript": {
+        "form": {
+            "lang": "Språk:"
+        }
+    },
+    "settings": {
+        "form": {
+            "lang": "Språk:"
+        }
+    }
 }