Add visualizations for ETA issues

[greghutch]

large jumps in etaToFirstWaypoint

• likely bubbles along the route (maybe just compute delta in etaToFirstWaypoint?)
  negative eta (ie etaToFirstWaypoint is less than current time)
• likely bubbles along the route

and large ETA vs ATA

• likely one bubbles at the end of the trip where size corresponds to delta between first eta calculated and final time?