Reformulate the liaison reasonings and statements

1. A bit cynically, I would say that this reasoning (liaison):

> The Open Permissions & Obligations Expression work is highly relevant to the Digital Publishing Interest Group and, more generally, the Digital Dublishing Activity <https://w3c.github.io/dpub/>.

is not really interesting; who cares whether something is interesting for a group at W3C? I would prefer to say something like

> The Open Permissions & Obligations Expression work is highly relevant for the Publishing Community at large that this group represents within W3C

2. SWIG (first of all, a link is missing to the SWIG homepage): the reasoning is shy in referring to schema.org <http://schema.org/>. Let us be frank about it: the reason is that we want to keep contact with schema.org <http://schema.org/>, and that is done within the vocab task force (or whatever the official name is) on schema.org <http://schema.org/> within the SWIG...

Ivan

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Ivan Herman, W3C
Digital Publishing Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
ORCID ID: http://orcid.org/0000-0003-0782-2704