[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
option_group_changed('port', 'main', 'web')
option_group_changed('query-log-file', 'main', 'web')
option_group_changed('profile', 'main', 'web')
option_group_changed('max-post-length', 'main', 'web')