Add email address to footer
Tweak nav bar

Add about page (so that I can remove the welcome message on the
dashboard), and change 'getting started' to 'help'.
Update README to be more explicit about frontend setup
Fixes #686
Merge pull request #688 from jfeaver/686_dev_setup_404s

Update README to be more explicit about frontend setup
Replace 'featured' with 'no-nits'. Fixes #689
Start creating help menu