consider updating underscore-rails, ace-rails-ap, sass-rails, jquery-turbolinks

• underscore-rails to ~> 1.8.2 - !2193 (merged)
• ace-rails-ap to > 3.0.3
• sass-rails to ~> 5.0.3 - !2184 (merged)
• jquery-turbolinks to ~> 2.1.0 - !1922 (merged)