prepare accompanying-course-work context for new template

* batch renaming css class name accompanying-course-work
* remove unused classes
* remove -list class
* remove double class

src/Bundle/ChillPersonBundle/Resources/views/AccompanyingCourseWork/index.html.twig

@@ -13,14 +13,14 @@
 {% endblock %}
 
 {% block content %}
-    <div class="accompanying_course_work">
+    <div class="accompanying-course-work">
 
         <h1>{{ block('title') }}</h1>
 
         {% if works|length == 0 %}
             <p class="chill-no-data-statement">{{ 'accompanying_course_work.Any work'|trans }}</p>
         {% else %}
-            <div class="flex-table accompanying_course_work-list">
+            <div class="flex-table">
                 {% for w in works %}
                     {% include '@ChillPerson/AccompanyingCourseWork/_item.html.twig' with { 'displayAction': true } %}
                 {% endfor %}