rel #17990 : CompositeBuilder optimization, do not try to link orphan categories in loop but try it once after all categories were added

dev #17990 site webthumbnail: use ?url param instead of zf style to prevent slash encoding problems on proxies

  - set all password to "achanger",
  - change roles,
  - handle updating users (map user id).

Hotline#17968 cms dates

See merge request !541

Hotline 6.56

See merge request !540