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

67% 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

@@ -196,8 +196,8 @@
     "hideDotfiles": "Hide dotfiles",
     "insertPath": "Umetni put",
     "insertRegex": "Umetni regex izraz",
-    "instanceName": "Instance name",
-    "language": "Language",
+    "instanceName": "Naziv instance",
+    "language": "Jezik",
     "lockPassword": "Prevent the user from changing the password",
     "newPassword": "Your new password",
     "newPasswordConfirm": "Confirm your new password",