Doc table heatmap

[Chadwiki]

Add a conditional formatting table panel for data.

#1505

[rashidkpc]

Feel free to add table panel comments here: #1525

[rashidkpc]

As this wasn't implemented in #1525 I'm reopening it.

[tbragin]

I can see a couple of ways to do this:

(1) As @webtoed suggests in #1505, allow user to set arbitrary thresholds, similar to what we allow in some of the Marvel views, to define, for instance, a R/Y/G view, where
* Green is < Threshold 1
* Yellow is >= Threshold 1
* Red is >= Threshold 2

(2) Provide a mode that can be applied to one or more columns, where we automatically pick out outliers and color cells in a heatmap fashion to visually draw attention to them

[Chadwiki]

What Milestone will this be added to?

[cff3]

@tbragin Maybe as a third option:
Allow the user to specify a doc field from which the color information comes from. If this could be a scripted field as well, it would give many degrees of freedom on how to colorize the cell.