Merge pull request #73 from epc/copyedits

Copyedits for typos
Disable livereload because it's causing problems
Add dark logo.
Revert "Disable livereload because it's causing problems"

This reverts commit e5b11a489c0d303d13d6d82ef5764385fcf9993e.
Add "We're Hiring" button and redirect old jobs page.
Small font tweaks.
Paul didn't like my color of orange, so I picked one that's more Paul-friendly.
Add some commas.
Add a v0.9.0 CTA to the front page.
Open jobs page in a new window.
Clean up the community page a little bit.
Update overview, write 0.9.0 post
Update schema design doc, upgrading
Update post with language about failures
Add bit about data nodes
Add links to google community and facebook page
Fix spacing on the community page.
Fix link to v0.9.0 blog post.
Copy edits for typos