User will see statistically signifcant values in font color BLACK, and other insignificant/not available values in GRAY

[daragoldberg]

If variable values have no statistical significance, font color will be set to GRAY . Otherwise, font color will be BLACK.

CV > 20 Sig < 1.645

[andycochran]

We'll need to add a CV column name for each value in the popup. Something like this:

  popupColumns:
  - id: pop
    title: Population
    large: true
    values:
    - geomType: municipality
      columnName: popa16
      cv: popacv16

Then add something like ,${match.cv} AS cv to the getPopupValue() function.

Then columnTitles.map will need to set the isInsignificant var to true if > 20 so it can return ${isInsignificant ? 'medium-gray' : ''} in the <td>'s class.

@chriswhong I've tried ^this in my feature/75-highlight-current-geog-in-popup branch, but failed. Maybe we can pair on it?