Add confidence interval on rankings

[Lane]

Specification

• adjust location presentation to have a confidence interval overlay with pattern fill
• remove the fixed panel for displaying location data and show inline (accordion style)
• use the confidence interval provided in the ranking data CSV
• show locations with higher rank than 100 at bottom of the list with a "..." indicator
• add focus states for locations
• add active state to selected location

Next Steps

• specification
• wireframe / rough mockup of CIs
• prototype implementation (http://el2-rankings.surge.sh/#/evictions)
• team / client review
• revisions (if any)
• PR review
• add to release and launch 🎉

[Lane]

partial implementation is ready here: http://el2-rankings.surge.sh/#/evictions

received some feedback that the bars could be misinterpreted as a stacked bar graph. some options to fix this include

• using a line to mark the confidence interval
  
• using a pattern overlay to show confidence intervals on bars
  

[james-minton]

Update:

• would love to take another design pass on this to see if there are any worthwhile tweaks
• Restore prior tri-color scheme for different region types (large cities, mid sized cities, etc.). See difference between live and staging site for comparison.

[Lane]

@james-minton @sashasashasasha updated to include tri-color scheme for region types. let me know of any design changes needed to move this into the next phase.

https://dev.evictionlab.org/rankings/