Update team staff list

[benlk]

Changes:

• Move RC to Nerds Emeriti
• Add Tyler Machado
• Move Julia to the top of the list, 'cos she's director

[benlk]

Comparing search results for front-end https://github.com/INN/docs/search?p=1&q=front-end&type=&utf8=%E2%9C%93 (many results) to search results for frontend https://github.com/INN/docs/search?p=1&q=frontend&type=&utf8=%E2%9C%93 (zero results), it seems that we've already standardized on front-end