Add missing English header for metadata dialog
"core-index/subject": "Subject:",
"core-index/description": "Description:",
"core-index/rowCount": "Row count:",
+ "core-index/metaDatas": "Project metadata",
"core-index/customMetadata": "Custom metadata(JSON):",
"core-index/id": "Project ID:",
"core-index/importOptionMetadata": "Import option metadata(JSON):",
