Added the translation tag and comment for the string "Personal data"
{# The following is personal data and must ONLY be displayed to its owner. #}
{% ifequal editor.user user %}
<hr/>
+ # Translators: This is a heading for a section of the user profile which contains personal data about the user, such as their real name.
+ <h3>{% trans "Personal data" %}</h3>
+
- <h3>Personal data</h3>
<p>
<span class="glyphicon glyphicon-info-sign"></span>
