bug 1399639: Update to pyquery 1.2.17
bug 1399639: Update to pyquery 1.2.17

* pyquery 1.2.15 → 1.2.17: Update .val() handling to match PyQuery

Elchi3/kuma,jwhitlock/kuma,SphinxKnight/kuma,jwhitlock/kuma,mozilla/kuma,SphinxKnight/kuma,mozilla/kuma,escattone/kuma,escattone/kuma,mozilla/kuma,jwhitlock/kuma,SphinxKnight/kuma,mozilla/kuma,a2sheppy/kuma,a2sheppy/kuma,Elchi3/kuma,Elchi3/kuma,jwhitlock/kuma,mozilla/kuma,SphinxKnight/kuma,jwhitlock/kuma,a2sheppy/kuma,Elchi3/kuma,a2sheppy/kuma,a2sheppy/kuma,SphinxKnight/kuma,SphinxKnight/kuma,Elchi3/kuma,escattone/kuma