adds an RSS feed at /feed/ for the blog

based on https://github.com/cfpb/cfpb.github.io/pull/15
remove img from author plugin, rss shows it even when hidden
Merge pull request #247 from 18F/rss

Adds RSS feed at /feed/
add post date to post
Merge pull request #248 from 18F/dates-on-posts

Add publish date to blog posts
tidy up post title
move robots.txt into position, closes #238
team members should edit the _data directory
adding lindsay
Add diego to team pics
Merge pull request #251 from dlapiduz/staging

Add diego to team pics
Merge pull request #250 from LindsayYoung/staging

adding lindsay
+jane
fix yaml
temporary solution to allow non-photo teammates to get skipped on render
yay https now
Cleans up html and styles. Adds schema.org info for time published and datetime tag.
Merge pull request #249 from 18F/post-titles

Tidies up post title
Adds tags to blog post pages
Adjusts anchor tag styles for, um, tags.