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

89% 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

@@ -256,7 +256,7 @@
     "preview": "Pregled",
     "settings": "Postavke",
     "signup": "Registracija",
-    "siteSettings": "Site Settings"
+    "siteSettings": "Postavke tranice"
   },
   "success": {
     "linkCopied": "Poveznica kopirana!"