I reworked the page markup so that app-list and app-cartridges are only wrapping "main" column. Then change scss to style appropriately.

Added .column-content in order for site pages to use new alert rules
and bump icon up 1px so it looks more centered vertically

Created new class to hook into around featured 3 tiles so that only get larger icons. "see all" lists shouldn't have the larger icon. Refactored scss

Added .column-content in order for site pages to use new alert rules
and bump icon up 1px so it looks more centered vertically