Building an Idea Bank app using Google Apps Script

Building a GUI based app using Google Apps Scripting is very simple. Just need to have a very basic understanding of how Google Web Toolkit (GWT) works. For this app we used the

1. Spreadsheet Services in Google Apps Scripting; and
2. UI Services. 

UI Services are based on GWT, so it is good to have a basic understanding of the framework. The following is the code to create your own Idea Bank application in Google Sites. A real live working example is available here