Add LINE button to Social Buttons partial

Author: yasulab

app/views/shared/_social_buttons.html.haml

@@ -9,3 +9,6 @@
     %a.hatena-bookmark-button{"data-hatena-bookmark-lang" => "ja", "data-hatena-bookmark-layout" => "basic", "data-hatena-bookmark-title" => "#{full_title(yield(:title))}", :href => "#{full_url(yield(:url))}", :title => "このエントリーをはてなブックマークに追加"}
       %img{:alt => "このエントリーをはてなブックマークに追加", :height => "20", :src => "https://b.st-hatena.com/images/entry-button/button-only@2x.png", :style => "border: none;", :width => "20"}/
     %script{:async => "async", :charset => "utf-8", :src => "https://b.st-hatena.com/js/bookmark_button.js", :type => "text/javascript"}
+  %li{:style => "display: none;"}
+    .line-it-button{"data-lang" => "ja", "data-type" => "line", "data-url" => "#{full_url(yield(:url))}" }
+    %script{ src: "https://d.line-scdn.net/r/web/social-plugin/js/thirdparty/loader.min.js", async: "async", defer: "defer"}

config/initializers/csp.rb

@@ -2,7 +2,7 @@
   src = %w(* 'unsafe-inline' 'unsafe-eval' data:
            *.google-analytics.com *.googleapis.com *.google.com *.gstatic.com
            *.facebook.net *.facebook.com *.twitter.com *.mailchimp.com
-           *.hatena.ne.jp *.st-hatena.com
+           *.hatena.ne.jp *.st-hatena.com *.line-scdn.net
            *.slidesharecdn.com *.slideshare.net)
   config.csp = {
     report_only:      false,