changes in structure and content

1. Added 2 LV speakers
2. Update links in carousel - 1st slide has now a link to registration,
2nd - to social streams of the conference
3. Added links to social services for orgs in 'About'
4. Add registration page: for privates, for legals, about hotel booking
and parking
5. removed STAY TUNED section as well as the landing page at launchrock