Add translations for missing help tooltips

Added help tooltips for:

- condition
- loans
- object_addendum
- transcriptions
- provenance

Also added missing translations for data history.

backend/hu/object_addendum.json

@@ -78,7 +78,9 @@
         "ausm_visibility_md": "Visibility of separated measurements on museum-digital",
         "ausm_visibility_extern": "Visibility of separated measurements for external use",
         "vergl_visibility_md": "Visibility of comparable object information on museum-digital",
-        "vergl_visibility_extern": "Visibility of comparable object information for external use"
+        "vergl_visibility_extern": "Visibility of comparable object information for external use",
+        "metadata_rights_holder_explica": "Rights holder of the metadata of the object.",
+        "metadata_rights_status_explica": "License of the object metadata."
     },
     "ortart": [
         "",