Added robots.txt to _copy
Added 404.html from boilerplate theme
Updated CSS w/ jellywrd pygments theme, monospace

https://github.com/westurner/pygments-style-jellywrd
Added a code-block, categories, and tags to Hello World blog post
Updated flat5000/static/flat.css_t TOC styles
Updated pages/resume.rst: Added outline and anchor
Updated accounts (added Etsy and Pinterest)