Ability to add instance descriptions to dashboard widgets using a dashboard token

Thanks for the clarification Stuart, either way it would be nice to have the ability to include instance descriptions in widgets (especially table widgets) and filter on them. Currently we need to do a lot of that manually per-interface row so we can show what circuit each interface corresponds to. 

On a semi-related note, it would also be really nice to just be able to pull in device or instance-level properties and display their text in a table widget as well.