Reduce mapconfig payload

[mattiagiupponi]

When a map is saved, the client sends an enormous payload to geonode which contains all the information related to each dataset. (in attach an example)
This is the payload saved for a map with 2 layers: payload.txt

After discussing with @DavidQuartz it looks like the FE uses just a few information available that payload for correctly rendering the map.

Is it possible for the client to send just the payload required instead of the whole dataset information?

this is really useful to reduce the DB space

edit:
@DavidQuartz can you please provide an example of the minimum payload needed?

[giohappy]

@DavidQuartz please estimate this.

[DavidQuartz]

This issue is paused due to complexities arising when map payload is reduced. Other parts of the client which make use of various parts of the map state need to be in sync. This will require some more investigation and work to be done.