[security] use a stronger encryption algorythm for password, keeping bw compat Administrator should ask their users to reenter new password so they benefit from the new encryption. Also, new encryption is cross-platform compatible, eg you may now move an instance from windows to linux painlessly

doc/book usr/share/doc/cubicweb-documentation
doc/html usr/share/doc/cubicweb-documentation
debian/cubicweb-doc usr/share/doc-base/cubicweb-doc