[person details] add an "empty" statement on place of birth

CHANGELOG.md

@@ -111,3 +111,4 @@ Master branch
 
 - [Accompanying period list] Fix period label in list
 - [Accompanying period list] Fix label of closing motive
+- [Person details] Add an "empty" statement on place of birth

Resources/views/Person/view.html.twig

@@ -96,7 +96,11 @@ This view should receive those arguments:
 
                 {%- if chill_person.fields.place_of_birth == 'visible' -%}
                 <dt>{{ 'Place of birth'|trans }}&nbsp;:</dt>
-                <dd>{{ person.placeOfBirth }}</dd>
+                {% if person.placeOfBirth is not empty %}
+                    <dd>{{ person.placeOfBirth }}</dd>
+                {% else %}
+                    <dd><span class="chill-no-data-statement">{{ 'Not given'|trans }}</span></dd>
+                {% endif %}
                 {%- endif -%}
                 {%- if chill_person.fields.country_of_birth == 'visible' -%}
                 <dt>{{ 'Country of birth'|trans }}&nbsp;:</dt>