Fix the infinite spinner bug with the file manager store

www/code/main.js

@@ -42,6 +42,11 @@ define([
             secret.keys = secret.key;
         }
 
+        var onConnectError = function (info) {
+            module.spinner.hide();
+            Cryptpad.alert(Messages.websocketError);
+        };
+
         var andThen = function (CMeditor) {
             var CodeMirror = module.CodeMirror = CMeditor;
             CodeMirror.modeURL = "/bower_components/codemirror/mode/%N/%N.js";
@@ -687,10 +692,7 @@ define([
                 }
             };
 
-            var onError = config.onError = function (info) {
-                module.spinner.hide();
-                Cryptpad.alert(Messages.websocketError);
-            };
+            var onError = config.onError = onConnectError();
 
             var realtime = module.realtime = Realtime.start(config);
 
@@ -704,6 +706,11 @@ define([
                 // TODO handle error
                 andThen(CM);
             });
+            Cryptpad.onError(function (info) {
+                if (info && info.type === "store") {
+                    onConnectError();
+                }
+            });
         };
 
         var first = function () {