Store comment face positioning data and metadata together in a YAML/CSV file

[eritbh]

Editing comment face wiki pages by hand is a pain. To automate it, we would need to do the following:

• Move comment face positioning data from Sass to a YAML file
  • Add a build step that would pull data from the YAML file back into a Sass map so the stylesheet can be compiled
• Add metadata keys to that YAML file for things like comment face source and categories (for the commentfacesources and commentfacescategorized pages, respectively)
• Add a deploy script that reads those new metadata keys and regenerates wiki pages based on them