linter adjustments and refactor prep

Gemfile

@@ -17,10 +17,11 @@ gem 'sass-rails', '~> 5.0'
 gem 'settingslogic', '~> 2.0.9'
 gem 'turbolinks', '~> 5'
 gem 'uglifier', '>= 1.3.0'
+gem 'autoprefixer-rails', '~> 6.3'
 
 # assets
-gem 'bourbon'
-gem 'neat'
+gem 'bourbon', '~> 4.2'
+gem 'neat', '~> 1.8'
 
 # Foundation for Emails
 gem 'inky-rb', require: 'inky'