track when the signup buttons are hovered over
remove some outdated comments
make logging in from /home work
show "Return to app" link if the user is logged in on /home
make the return to app link stay a link
make the return to app link stay a link
Merge pull request #3559 from circleci/fix-home-route

Fix home route
Merge commit 'e5c085d6cf45837a355a31852488821bc46dece7'
Merge commit '056bc25bf3258dfb43d90d614fb83d3ae73ab148'