stellar removed. corrupted file

Signed-off-by: Jordan Haines <jordan@jordanairwave.co.uk>
new stellar.js file added.

Signed-off-by: Jordan Haines <jordan@jordanairwave.co.uk>
scrolling function added to js file for main navigation

Signed-off-by: Jordan Haines <jordan@jordanairwave.co.uk>
double cols floats removed.  Flex box added.  Responsive added so double colums go to single at 600px.  Stellar.js set changed.

Signed-off-by: Jordan Haines <jordan@jordanairwave.co.uk>