Community wiki

All,

If think the community wiki is right here:

    https://www.w3.org/community/xformsusers/wiki/Main_Page

I am able to login with the same username/password I was lately using for
the other wiki.

We should consider moving to there the following two pages:

   https://www.w3.org/MarkUp/Forms/wiki/XForms_2.0
   https://www.w3.org/MarkUp/Forms/wiki/XPath_Expressions_Module

History won't be transferred if we just do a copy/paste, but links to diffs
to the WG wiki will still work unless that wiki is taken down.

-Erik