feat: Translate frontend/src/i18n/en.json in sv_SE

83% of minimum 50% translated source file: 'frontend/src/i18n/en.json'
on 'sv_SE'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

frontend/src/i18n/sv-se.json

@@ -14,7 +14,7 @@
     "file": "Fil",
     "folder": "Mapp",
     "fullScreen": "Växla helskärm",
-    "hideDotfiles": "Hide dotfiles",
+    "hideDotfiles": "Dölj punktfiler",
     "info": "Info",
     "more": "Mer",
     "move": "Flytta",
@@ -24,7 +24,7 @@
     "ok": "OK",
     "permalink": "Skapa en permanent länk",
     "previous": "Föregående",
-    "preview": "Preview",
+    "preview": "Förhandsvisa",
     "publish": "Publisera",
     "rename": "Ändra namn",
     "replace": "Ersätt",