Add comments - early version of o-livefyre-comment-client

So be gentle
More of a note to myself than anything else...  Right now there are more than 4 possible fields that could be the headline depending on the type of article, the product rendering the article, whether the headline is for a section page or the article itself...  and some of them should be combined with 'kickers'...  It's just horrible.  I think we have an opportunity to simplify this with next but it will be good to understand _why_ so many are needed right now...