Merge changes Ib4a3e9ca,Ifa3f69e1,I8e9d821a,I8bea08fa

* changes:
  Schedule Shane's talk on day #2
  Link scheduled talks to their details
  Schedule the 'mono-repos with Gerrit' talk on Day #2
  Add "what's new in Gerrit v3.4/v3.5" talk