Automatic multilingual site on install

This pull is the updated version of old #1713

This is a proposal of a new feature for the future Joomla 3.2.

Is an automatic Multilanguage site generator during joomla installation:
![screen shot 2013-08-11 at 02 41 02](https://f.cloud.github.com/assets/1375475/943474/f77cbc2a-021d-11e3-8167-dae015f291a2.png)

See this short video to understand the feature: http://www.youtube.com/watch?v=YY6F4ktHq9I
(I will send soon a new updated version video)

After the install you will have automatically a multilingual site:
- Creates the Content Languages
- Create menus
- Create menu home items
- Create menu modules
- Activate language plugins and multilanguage status module
- Show flags module in frontend
![screen shot 2013-08-11 at 02 40 07](https://f.cloud.github.com/assets/1375475/943476/097e846c-021e-11e3-9e77-6039d669a8d3.png)

Please test it ^_^

The draft of this idea was done during the redCOMPONENT Epic participation in the last Joomla Pizza Bugs and Fun.
This feature has been created by Carles Serrats (@dypsys) and me during an unofficial Internationalization 4th Code Sprint in Barcelona  ^_^



I hope you enjoy. 

This feature is dedicated to our Joomla internationalization hero: Jean Marie Simonet and all the Joomla Translation Teams for their amazing work.

Joomla Rocks!