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

85% 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

@@ -36,13 +36,13 @@
     "selectMultiple": "Välj flera",
     "share": "Dela",
     "shell": "Växla skal",
-    "submit": "Submit",
+    "submit": "Skicka",
     "switchView": "Byt vy",
     "toggleSidebar": "Växla sidofält",
     "update": "Uppdatera",
     "upload": "Ladda upp",
-    "openFile": "Open file",
-    "discardChanges": "Discard",
+    "openFile": "Öppna fil",
+    "discardChanges": "Förkasta",
     "saveChanges": "Save changes"
   },
   "download": {