Reverse dependencies for sass_paths

Latest version of the following gems require sass_paths

Gem	Version	Date	Downloads
nesta-contentfocus-extensions +9.3 Thousand Downloads	`0.0.3` July 23, 2015	July 23, 2015	9.3 Thousand
stencil-ruby +8.46 Thousand Downloads	`0.0.3` September 30, 2015	September 30, 2015	8.46 Thousand
foundation-scss +2.96 Thousand Downloads	`6.3.1.0` June 12, 2017	June 12, 2017	2.96 Thousand