New cloud and iphone/ipad images from Josh.
New Rails image from Josh.
New mind map and prototyping images from Josh. Put back the Cosmo theme.
New Scrum image from Josh. Also lightened the Cloud background image.
Converted all embedded videos to be links which looks a lot better with Josh's new artwork.
Added page headings below main image. Added "READ MORE >>" button to all pages except for contact page.
Merge branch 'feature/new_services_artwork' into develop