fixed the translation in the email

app/views/notifier/mentioned.html.haml

@@ -3,8 +3,9 @@
 %p
   = "#{@sender.name} (#{@sender.diaspora_handle})"
   = t('.mentioned')
-
-  = @post.message
+%p
+  = @post.message 
+%p
 
   %br
   = link_to t('.sign_in'), status_message_url(@post)

config/locales/diaspora/en.yml

@@ -464,6 +464,7 @@ en:
       mentioned:
           subject: "%{name} has mentioned you on Diaspora*"
           mentioned: "mentioned you in a post:"
+          sign_in: "Sign in to view it."
   home:
       show:
           share_what_you_want: "Share what you want, with whom you want."