final review for First Public Draft of "Reviewed Credibility Signals"

Okay, with Subbu's help, I have prepared the revised version including 
RNG Awards.

https://credweb.org/reviewed-signals-20200220/

It includes a color-coded "diff" from the previous version (the one 
circulated before the meeting).  The changes are:

* More detailing version links in the header
* Details about how to give feedback, in the Status section
* A link to a "process" page 
<https://docs.google.com/document/d/1i6lCJPaJLQwrDUknnzWW5ixgWb8xp54KdLu2mam206Q/edit> 
(which we should review and improve, on a separate thread)
* inclusion of a "CredWeb Process Note" block on some of the award signals
* renaming some of the example RDF properties for awards
* Adding a "geographic focus country code" field, to highlight the 
relevant country for an awards signal
* Adding the RNG award as we discussed in the meeting

Please take a look and let me know if you see any show-stopping problems 
as soon as possible within the next 72 hours. Please hold minor issues 
for the next cycle. Trivial errors can also be fixed during this review 
period. Hopefully we can publish this as a draft CG report for public 
comment on Monday.

Also, next week (26 February) I'm thinking let's late a break from 
Signals (while waiting for public feedback) and have that 
presentation+discussion with Leonard Rosenthol of Adobe about the 
Content Authenticity Initiative and related work.

Thanks everyone,

    -- Sandro