* Replace variables.json with colors.json and update related files accordingly
* Add variables data files
* Update variables include template and all related files to use new variables data
* Fix mobile breakpoint id typo in responsivness docs page
* Fix Liquid syntax error in made-with-bulma docs page
* Update bulma sass files count in modular docs page
* Use breakpoints data in responsiveness helpers docs page
* Use breakpoints and variables data in typography helpers docs page
* Add missing page titles in docs pages front matter
* Add breakpoints variables in responsivness docs page
* Update breakpoints list values by looping through page.breakpoints
* Add link to responsiveness variables repo file
* Add mixins variables in responsivness docs page
* Update mixins list values by looping through page.mixins
* Add link to responsiveness mixins repo file
* Update responsivness demo table header
* Add responsivness variables reference table
* Add variables to repo files urls (dry)
* Add breakpoints as jekyll data
* Use responsiveness breakpoints from jekyll data
* Replace breakpoints.yml with breakpoints.json and update relevant code accordingly
* Update URLs to source files in responsiveness docs page
