refactor(instances): the VM lists' scripts load from static files

The VM lists lose their inline scripts and handlers: host_groups.js
collapses a host's VMs in the grouped list, new_vm_dialog.js reads the
new-VM dialog's CPU bars and capacity lines, and console_window.js
(loaded by every page) opens a console button's window, on the lists and
on the VM page alike. A list row's Start no longer calls the please-wait
dialog, which the list pages do not have (the call only raised an
error). The VM page's URL placeholders take the __name__ form the other
pages use.

templates/base.html

@@ -85,6 +85,7 @@
     <script src="{% static 'js/sort_tables.js' %}"></script>
     <script src="{% static 'js/error_focus.js' %}"></script>
     <script src="{% static 'js/back_links.js' %}"></script>
+    <script src="{% static 'js/console_window.js' %}"></script>
     {% block script %}{% endblock %}
   </body>
 </html>