Hupa webmail Demo

Hupa in Demo mode:
- Username is set to 'demo' and the password is 'demo'
- Uses a collection of example messages and stub implementations of IMAP and SMTP servers.
- In this instance you can test almost the Hupa features, but emails you send will never reach the addressee.
Hupa for Gmail:

We have disabled this instance to avoid risks and legal issues.
Nevertheless you can download the last built of Hupa and run it in your system:
```
$ java -jar hupa-0.0.2-SNAPSHOT.war
```
Your instance on Hupa:
- Will work with any imap enabled account in gmail.
- You have to provide a valid gmail username (don't forget the domain part) and your password.
- Because this instance and gmail servers are far away, and Hupa caching is not enabled, you will notice a latency when using the application.
- You can read your real messages, search them, and use Hupa to reply and send messages to your contacts.