feature(members): MR!6 - Sib-directory added

- CSS finalised
- Default user picture added
- See https://git.happy-dev.fr/startinblox/components/sib-directory/merge_requests/6

src/menu-left.pug

@@ -9,7 +9,6 @@ nav#navbar
         )
       div.menu-label Members
       div.menu-icon.icon-people
-    sib-route.menu(hidden, name='member', id-prefix=`${sdn}/members/`)
     div.divider
     sib-route.menu(name='job-offers')
       div.menu-notification