xpath_contains_function behaves differently from jQuery

[flisky]

Hi @gawel,

xpath.add_post_condition("contains(text(), '%s')" % value) in here , does not match the children's text.

A possible fix comes from Is there a way to get all the children's text in xpath - contains(normalize-space(), '%s')

Thanks,

[gawel]

Unfortunatly this break some tests