Better version/history control for containers

[Starker3]

Currently the only way to see what has changed or been deleted in a tag manager container is the list shown in the "What's changed since last version" while publishing a new version of the container. This only gives a list though and to see the actual changes you would need to export that version and import it into a new container or do a diff on the json directly.

It would be extremely useful if there was better version control for the tag manager to be able to go back in the history and see exactly what has been changed or deleted in the UI directly in detail.

One idea to make this easy to use would be a new dropdown menu next to the container to be able to load/edit a specific version, for instance here:

[Stan-vw]

Would #721 solve this issue?

[snake14]

@Stan-vw Sadly, no. #721 is dealing only with what's changed since the latest version while this issue is talking about implementing a comprehensive history feature and allowing customers to view the full history of the container.

[jr180180]

I would find this useful