Add translation for mass sharing of public object data

frontend/ar/institution.json

@@ -60,6 +60,11 @@
         "museum_shop": "\u0645\u062d\u0644 \u0627\u0644\u0645\u062a\u062d\u0641",
         "babycare_room": "\u063a\u0631\u0641\u0629 \u0639\u0646\u0627\u064a\u0629 \u0628\u0627\u0644\u0637\u0641\u0644",
         "ticket_prices": "\u0627\u0633\u0639\u0627\u0631 \u0627\u0644\u0628\u0637\u0627\u0642\u0627\u062a",
-        "online_visitor_statistics": "Visitor statistics"
+        "online_visitor_statistics": "Visitor statistics",
+        "institution_share": "Public shares",
+        "institution_share_introduction": "Here you can download XML dumps of the public data of the museum.",
+        "summary": "Summary",
+        "format": "Format",
+        "last_generated": "Last generated"
     }
 }