updated favicon
Merge branch 'www-launch-v5' of github.com:squatconf/website into www-launch-v5
ignore email signups that already exist and are verified, fixes #9
handle duplicate email submissions (by silently dropping them)
Merge branch 'master' into www-launch-rc2
Merge pull request #10 from squatconf/www-launch-rc2

v0.4.4-rc2 (latest fixes)