am 61aeb2b7: (-s ours) am b094b0c4: modifications to webinars: add the ability to add an upcoming webinar event to Google Calendar; add some introduction text; adjust some markup

* commit '61aeb2b7212cae211ce68b3600ddbe69c6e98bb3':
  modifications to webinars: add the ability to add an upcoming webinar event to Google Calendar; add some introduction text; adjust some markup