add followeringers page
add an API for retrieving UserData for all the followers of a user
add follow/unfollow UI, and a currently very unstylish user header to feed/follows pages
have root route points to the about page
display log in prompts when not logged in on Feed, Practice, and Create pages
use user_key instead of user_email to determine if the card is from the current user in Feed view
instead of a "public" flag property on Cards, use a "private" flag instead
remove FakeUser debugging hack
search now respects your privacy
enable remote devshell
add Take 'em all button to Search page
Add user_email to UserData and plumb it through frontend

Now the gravatar in userheader.jsx and header.jsx works.
Style profile page and make "follow" dynamic
Remove FakeUser reference
Use white-space:pre-line to break lines right for input_format == "text"