add content class (required due to Bulma invasive reset)

Author: TimidRobot

themes/vocabulary_theme/templates/author.html

@@ -15,7 +15,7 @@
             <img class="profile" src="https://secure.gravatar.com/avatar/{{ this.md5_hashed_email }}?size=200&d=mp" alt="gravatar">
           </figure>
         </div>
-        <div class="column is-8">
+        <div class="column content is-8">
           <h2>{{ render_author_name(this) }}</h2>
           {% if this.about %}
             <div class="about">{{ this.about }}</div>