cubicweb #2093160 [facets] limit growth on the right (facetform for tables) [validation pending]

When the filter form gets crowded, it expands on the right. This affects the container, hence other elements on the page get stretched ...

One wants new facet lines to be created if needed. Also the layout should react to browser window changes.

done in3.14.1
load left0.000
closed by#3efb83e4e8f3 [facets] do no stretch to the right when there are many facets; instead use a floating layout (closes #2093160)