Linted sass files
Merge branch 'master' into grid-revised

Conflicts:
	css/base.css
	scss/commons/layout/_grid.scss
	scss/commons/utilities/_display.scss
	scss/commons/utilities/_math.scss
	scss/css/base.scss
	scss/project/guides/_patterns.scss
	scss/project/guides/_swatches.scss
	scss/project/layout/_base.scss