Add .archive .byline to display authors name

Proposing to add ```.archive .byline {}``` so that Categories, Author etc can have the authors name instead of just ```Posted on November 28, 2014```. Not sure if there is any background behind it or a reason why we won't show this across the theme :)

Update: Well, this did not workout well, we need to add one more ```.blog .byline {}``` and now this is complete.