* Misc cleanup
* Include permissions in TemplatedAttr context
* Introduce CircuitTerminationPanel to replace generic panel
* Replace all instantiations of Panel with TemplatePanel
* Misc cleanup for layouts
* Enable specifying column grid width
* Panel.render() should pass the request to render_to_string()
* CopyContent does not need to override render()
* Avoid setting mutable panel actions
* Catch exceptions raised when rendering embedded plugin content
* Handle panel title when object is not available
* Introduce should_render() method on Panel class
* Misc cleanup
* Pass the value returned by get_context() to should_render()
* Yet more cleanup
* Fix typos
* Clean up object attrs
* Replace candidate template panels with ObjectAttributesPanel subclasses
* Add tests for object attrs
* Remove beta warning
* PluginContentPanel should not call should_render()
* Clean up AddObject
* speed.html should reference value for port_speed
* Address PR feedback
