Here is the installation for the Gadget Server.
1. Download the Gadget Server distribution.
2. Extracted the distribution into a local folder.
3. Go to the extracted folder, run following command to install:
ant deploy -Das7.home=<your-as7-home-location>
4. Start the browser, go to: http://localhost:8080/gadget-web
Note: you will need to sign up a user before log in.