Improve 1-to-1 Relation Between Values in UI Kit and SCSS Variables

[jeffkamo]

Challenge
At the moment, there is a disconnect between the values that the UI Kit defines in its setup "pages" and the values defined in the platform-scaffold (see below table for example).

The relationship between the two sets of values are perfectly clear. As can be seen in the two screenshots below, it's not immediately obvious that h1 styles are intended to match with the $huge-font-size and $huge-line-height variables.

UI Kit	SCSS Variables

Proposed Solution
The UI Kit should be updated to include what variables receive which values.

Criteria
A developer should be able to step through the UI Kit's setup and replace all values in the platform-scaffold's _variable.scss with little to no explanation.