authentication with Devise
assets compiled for Heroku
reorganize css sheets structure, improve footer style, add sticky topbar
sticky responsive topbar with correct user_signed_in? behavior, landing_page.css improvement
assets compiled for Heroku
fix bug: dropdown MY ACCOUNT did not work after click on flash message
assets compiled for Heroku
test: commiting assets modif + assets compiled for Heroku at the same time
authentication dev succeed
authentication dev succeed
setup rails_admin + fix username display in top bar once logged in
rails-admin authentication for admins only