[uilib] soup2xhtml uses now lxml.html.Cleaner
The lxm cleaner class let you configure more easily the allowed tag elements in parsed content.
Caveats:
- attributes in elements are not dropped (and html layout can be broken if css classes are reused)
- root tag element in snippet is buggy
if versions_map['cubicweb'][0] == (3, 7, 4):
config['http-session-time'] *= 60
config['cleanup-session-time'] *= 60
config['cleanup-anonymous-session-time'] *= 60