Multidimensional storage of an entity

[joamag]

Description

Sometimes it's relevant to keep storing the history/snapshot of an entity as backup that may be used latter to rollback unwanted changes.

For that a pre_update (and pre_delete) operation must be created that intercepts the storage operation and that retrieves a snapshot of the current state storing it on a different collection.

There should be a proper UI for retrieval (and inspection) of a different snapshot (snapshots collection).

[joamag]

@tsilva this is huge

[joamag]

first part of the implementation is done, still some tests pending
the UI is also missing

[joamag]

better UI must be created for the management of this feature