Added validation messages for contacts and nl subscription
Merge pull request #2 from AntonioComiGaia/master

Added validation messages for contacts and nl subscription
Changed a bit the text of site and	added code to send confirmation email to user
Configured application to read configuration from environmental variables. Also adapted readme
Added more text to the page
Readme
Added 404 page
Change countdown to 1 april 2015
Added 404 and 500