FEATURE: properly style whisper email notifications

app/models/post.rb

@@ -90,6 +90,10 @@ class Post < ActiveRecord::Base
     includes(:post_details).find_by(post_details: { key: key, value: value })
   end
 
+  def whisper?
+    post_type == Post.types[:whisper]
+  end
+
   def add_detail(key, value, extra = nil)
     post_details.build(key: key, value: value, extra: extra)
   end

app/views/email/_post.html.erb

@@ -1,4 +1,4 @@
-<table class='post-wrapper'>
+<table class='post-wrapper <%= post.whisper? ? "whisper" : "" %>'>
   <tbody>
     <tr>
       <td class='user-avatar'>

lib/email/styles.rb

@@ -89,6 +89,7 @@ module Email
       style('hr', 'background-color: #ddd; height: 1px; border: 1px;')
       style('.rtl', 'direction: rtl;')
       style('td.body', 'padding-top:5px;', colspan: "2")
+      style('.whisper td.body', 'font-style: italic; color: #9c9c9c;')
       correct_first_body_margin
       correct_footer_style
       reset_tables