Talk dashboard should show upcoming meetings and possible topics

[raymondberg]

We want a single place for a meeting planner to look at upcoming talks and upcoming meetings side by side

• Show upcoming meetings
• Show total talk time for talks currently scheduled for the meeting
• Show all topics not yet assigned a meeting or unapproved
  • Edit links take you from the dashboard to the talk edit

[raymondberg]

I think it'd be nice to have an "unconfirmed total minute count" and a "Confirmed minute count". Would also be good to show our target of 70 to 90 minutes.

Would also be great if it added Q/A times (5 minutes per talk) and "estimated break time" (5 minutes per talk)