Add user link, remove last ',' in playlist detail

templates/playlist/detail.html.twig

@@ -49,7 +49,10 @@
                             {% set charters = [] %}
                             {% for song in playlist.songs %}
                                 {% if song.charter not in charters %}
-                                    {{ song.charter }}, 
+                                    {% if loop.index == 1 %}
+                                    <a href="{{ path('user.detail', {userId: song.charter.id}) }}">{{ song.charter }}</a>
+                                    {% endif %}
+                                    ,&#32<a href="{{ path('user.detail', {userId: song.charter.id}) }}">{{ song.charter }}</a>
                                     {% set charters = charters|merge([song.charter]) %}
                                 {% endif %}
                             {% endfor %}
@@ -76,4 +79,4 @@
 
 {% block styles %}
     <link rel="stylesheet" href="{{ asset('assets/css/playlistdetail.css?v=' ~ date().timestamp) }}" />
-{% endblock %}
\ No newline at end of file
+{% endblock %}