Make sure the app is loaded before hooking account selectors

Resources/Scripts/code.js

@@ -497,6 +497,7 @@
   //
   // Block: Swap shift key functionality for selecting accounts.
   //
+  onAppReady.push(function(){
     $(".js-drawer[data-drawer='compose']").delegate(".js-account-list > .js-account-item", "click", function(e){
       e.shiftKey = !e.shiftKey;
     });
@@ -510,6 +511,7 @@
         });
       }
     });
+  });
   
   //
   // Block: Work around clipboard HTML formatting.