blog: when forums are not allowed on articles, don't display the .inner around the #FORMULAIRE_FORUM
mobile: toggle the content
blog: using logoproportio-inverse.svg for every blog page
Merge commit 'f0910e6886b6d091d9b5d2a71686f50547bc09d8'
Merge commit '2ac5fd205e65729ee6c4cecc1a7ea05f9f8ce80b'

* commit '2ac5fd205e65729ee6c4cecc1a7ea05f9f8ce80b':
  blog: using logoproportio-inverse.svg for every blog page
  mobile: toggle the content
  blog: when forums are not allowed on articles, don't display the .inner around the #FORMULAIRE_FORUM