Add translation variables for settings in backend and

institution-related pages in frontend

frontend/ar/museum.json

@@ -12,6 +12,7 @@
         "map_symbols": "\u0627\u0644\u0631\u0645\u0648\u0632",
         "images": "\u0627\u0644\u0635\u0648\u0631",
         "page_museum_description": "\u0644\u0645\u062d\u0629 \u0639\u0627\u0645\u0629 \u0639\u0646 \u0643\u0644 \u0627\u0644\u0645\u062a\u0627\u062d\u0641 \u0627\u0644\u0645\u0634\u0627\u0631\u0643\u0629 \u0641\u064a \u0645\u062a\u062d\u0641 - \u062f\u064a\u062c\u064a\u062a\u0627\u0644",
-        "map_options": "Map options"
+        "map_options": "Map options",
+        "list_of_museums": "List of all museums"
     }
 }