Fix translations

Remove dulicated messages

Fix quotes in templates

templates/comments/new.html.tera

@@ -1,11 +1,11 @@
 {% extends "base" %}
 
 {% block title %}
-{{ "Comment \"{{ post }}\"" | _(post=post.title) }}
+{{ 'Comment "{{ post }}"' | _(post=post.title) }}
 {% endblock title %}
 
 {% block content %}
-<h1>{{ "Comment \"{{ post }}\"" | _(post=post.title) }}</h1>
+<h1>{{ 'Comment "{{ post }}"' | _(post=post.title) }}</h1>
 <form method="post">
     <label for="content">{{ "Content" | _ }}</label>
     <textarea name="content"></textarea>