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

79% of minimum 50% translated source file: 'frontend/src/i18n/en.json'
on 'hr'.

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

frontend/src/i18n/hr.json

@@ -227,7 +227,7 @@
     "shareDuration": "Podijeli Trajanje",
     "shareManagement": "Upravljanje Dijeljenjem",
     "shareDeleted": "Podjela izbrisana!",
-    "singleClick": "Use single clicks to open files and directories",
+    "singleClick": "Koristi jednostruke klikove za otvaranje datoteka i mapa",
     "themes": {
       "default": "System default",
       "dark": "Dark",