don't track Optimizely Conversions from thinkful.com emails
added an upcoming course dates section
added the styles for the course dates to the long page version
added next class start date to hero, changed after-signup text
Merge branch 'master' into signup-flow-improvements
changed pdf to new version
moved social buttons out of box, hid next class date with js on post signup
fixed footer text and css, changed Source Sans Pro to use the correct Typekit name source-sans-pro