Don't request data if previous request has not yet been successful

client/source/scripts/stores/BaseStore.js

@@ -6,17 +6,34 @@ export default class BaseStore extends EventEmitter {
 
     this.dispatcherID = null;
     this.on('uncaughtException', this.handleError);
+    this.requests = {};
     this.setMaxListeners(20);
   }
 
+  beginRequest(id) {
+    this.requests[id] = true;
+  }
+
   handleError(error) {
     console.trace(error);
   }
 
+  isRequestPending(id) {
+    if (this.requests[id] == null || this.requests[id] === false) {
+      return false;
+    }
+
+    return true;
+  }
+
   listen(event, callback) {
     this.on(event, callback);
   }
 
+  resolveRequest(id) {
+    this.requests[id] = false;
+  }
+
   unlisten(event, callback) {
     this.removeListener(event, callback);
   }