Switch magic flexy rigboard layout to use *container* width queries rather than *screen* width queries

This resolves the overflow seen in the profile detail view in the most overkill way possible. Nerf this!

RIGS/templates/rigboard.html

@@ -12,7 +12,7 @@
     </div>
     {% endif %}
 </div>
-
+<div style="container-type: inline-size;">
 {% include 'partials/event_table.html' %}
-
+</div>
 {% endblock %}