render_box: adding addAge option

src/Bundle/ChillPersonBundle/Resources/views/Entity/person.html.twig

@@ -7,6 +7,7 @@
     * addEntity     bool
     * addId         bool
     * addInfo       bool
+    * addAge        bool
     * hLevel        integer
     * customButtons [
         'before'    Twig\Markup, (injected with macro)
@@ -60,6 +61,11 @@
                 {{ 'Born the date'|trans({'gender': person.gender,
                     'birthdate': person.birthdate|format_date("medium") }) }}
                 </time>
+                {%- if options['addAge'] -%}
+                    <span class="age">
+                        {{ person.age ~ ((person.age > 1) ? ' ans' : ' an') }}
+                    </span>
+                {%- endif -%}
             </p>
         {%- endif -%}
     {#- tricks to remove easily whitespace after template -#}