cubicweb-bootstrap #8121463 hidding contextual boxes on small devices [open]

Many CW sites have a lot of contextual boxes on some pages (for instance blogentry primary view has "tags", "latest posts", "posts by date", "posts by author", ...). I wonder if we shouldn't hide these on small devices. That would mean for instance adding "hidden-xs" and "hidden-sm" CSS classes (see http://getbootstrap.com/css/#responsive-utilities-classes).

prioritynormal
typeenhancement
done in<not specified>
load0.500
load left0.500
closed by<not specified>