Adding a link to CiviKey's documentation
First step of the home update
updating sql script + home images
Improving the features on the home's slider
Adding tours
tiny fix .. with some big repercussions :-)
a few fixes : (see below)

- The Invenietis logo goes to the Invenietis website.
- Clicking on the accordion images now collapses/expands the accordion on both categorized and classic roadmaps view
Merge branch 'develop'