WIP
First draft of Blogs about "How to configure SS connectors".
Better handling of multilevel ordered lists.
Better handling of relative links.
Merge branch 'master' of github.com:SixSq/sixsq.github.com
Few corrections and harmonised the posts
Merge branch 'master' into blog/connectors

Conflicts:
	sixsq.css
OpenStack connector doesn't need install
Added a "shadow" class in the css.
small changes ec2 blog