add some actions and/or auto mechanism to clean normalizedData

[klis87]

Currently there is no concept to clean normalized data, open to any ideas how to solve it.

Once idea is just to scan all queries state, get all dependencies and remove all unused. This could be slow though. Ideally this could be automatic, maybe some ref count could be done for each normalized object

[zeraien]

I do like the idea of the refcount, it's a proven concept...