fix(templates): the list pages search their rows as text, with one script

The list pages' search (filter-table.js) read what was typed as a
regular expression: a "(" or "[" stopped it with an error. It also
needed jQuery, while the instance list had its own script for the same
search. Both are now static/js/table_filter.js: plain text in any case,
the instance list's state list and host groups where a page has them,
remembered for a day as before. A group's header row is marked as one
(data-group-header) instead of being any row without a state.

instances/templates/allinstances.html

@@ -94,7 +94,7 @@
     </div>
 {% endblock content %}
 {% block script %}
-    <script src="{% static 'js/instance_filter.js' %}"></script>
+    <script src="{% static 'js/table_filter.js' %}"></script>
     <script src="{% static 'js/find_address.js' %}"></script>
     {% if request.user.is_superuser %}
         <script>