Make empty states more user friendly

[hjwk]

According to the "Educate, Delight, Prompt" principle.

Empty states include : a friends page of a user who has none, an empty library, and the most important of all : the empty dashboard of a new user.

Example of a "good" empty state : https://s3.amazonaws.com/blog.invisionapp.com/uploads/2015/06/tumblr_np52smvBCt1rdf37to1_1280.jpg

I was thinking a good way to do that could be to use the "infoboxes" fabrice created instead of plain text.

[hjwk]

Note : adding a section "discover events near you" in the dashboard could be a way of showing new users "how to use" the app.