Set functional test

## To run functional test 

Functional test are controlled by the stack python/selenium
so you need to have installed python and pip (used to manage python package).
Usually python is alredy on the machine just chec is 2.7.4.
To install pip and other python dev tool run 

`sudo apt-get install python-pip python-dev build-essential`

then to install selenium

`sudo pip install selenium`

at this point is possible run test by 

`python functionaltests/test_scenario_1.py`