Feature map

We have been using Discojuice in GRNET's cloud service website:
https://okeanos-global.grnet.gr/home/

For presentation purposes, we  used http://jqvmap.com/ to integrate a map feature
to the DiscoJuice standalone page. 

The feature is used in production for over 6 months and you can explore it in 
the following shibboleth login page: 
https://accounts.okeanos-global.grnet.gr/ui/login/shibboleth

By default, viewing the map is disabled and you can activate it by setting 
`djc.map = true` 
to Discojuice settings.

More details about the feature can be found in the docs/map.txt file.

Any suggestions or comments are welcome.

Thanks.