Adds the [Chain React 2018](https://infinite.red/ChainReactConf) conference occurring July 11-13 in Portland to `content/community/conferences.md` to "Upcoming Conferences" in chronological order.
* [Website] Add titles and labels to iframes and images on Community pages
**what is the change?:**
- add titles to all iframes
- add alt tags to images
- add `aria-label` to some links which only have images as contents.
**why make this change?:**
Based on warnings thrown by aXe a11y audit of those pages
**test plan:**
Manual testing
**issue:**
None
* remove redundant alt tags
Adds a new docs website, built with Gatsby JS, to replace the old Jekyll site. Source code for the new site lives in /www (although markdown and YML data still comes from the legacy /docs folder).
Changes to either markdown or website source code can be previewed on Netlify. The react-js bot should automatically add comments to each PR with preview links. (This preview is generated by running the newly-added yarn build:docs command in the root package.json.)
The majority of the changes in this PR are contained within the new /www directory. However some minor modifications have been made to existing content in the /docs directory:
* Modified frontmatter author block to always be an array
* Small markdown formatting tweaks
* Add AgentConf 2018
We are having another edition of the AgentConf in 2018, which has again a strong focus on react, and we'll be skiing again 😎 Last year's PR for reference: https://github.com/facebook/react/pull/8196
* Update conferences.md
React Riot is the first online worldwide hackathon for React! No cost to enter and teams can win some cool prizes. It's a community event to build the best React app in 48 hours.
Andrew Hooker
Robert Haritonov
Abhishek Balaji
Yash Joshi
Kristian Freeman
Richie
Bevan Wentzel
Janet Todorova
Mihaela Ciobanu
Alex
ferrannp
Igor Brovchenko
Victoria Quirante
Nathan Ward
Carlos Iván Suarez
John Darryl Pelingo
Sidhartha Chatterjee
Bernard Lin
mikaello
Matthew Holman
Ilya Gelman
Brian Vaughn
Marco Solazzi
Flarnie Marchan
Orjiewuru Kingdom Isaac
Matias Larsson
Taegon Kim
Daniel Rotter
Karthik Balakrishnan
Michiya
Andrew Rota
Danilo Vitoriano
Nathan Hunzaker
Sakina Crocker
Erik Hellman
Samuel Hapák
Hikaru Suido