[design proposal] adding a mixin to style social issue badge

src/Bundle/ChillPersonBundle/Resources/views/Person/list_with_period.html.twig

@@ -1,7 +1,7 @@
 {%  macro button_person(person) %}
     <li>
-        <a href="{{ path('chill_person_accompanying_period_list', { 'person_id' : person.id }) }}"
-           class="btn btn-sm btn-outline-primary" title="{{ 'See accompanying periods'|trans }}"><i class="fa fa-random"></i></a>
+        <a href="{{ path('chill_person_accompanying_course_new') }}"
+           class="btn btn-sm btn-create change-icon" title="{{ 'Create an accompanying period'|trans }}"><i class="fa fa-random"></i></a>
     </li>
 {% endmacro %}