Allow level 'personal' for heating and electricity emissions

[codingfabi]

Currently, the endpoints heatingAggregated and electricityAggregated only allow parameters 'group' and 'institute' for the query parameter level.
However, this makes the individual dashboard unnecessary hard to compose because we would have to divide the group emissions by working group employees in the frontend. I would argue that this is a backend task.

Proposal:

Add something like the following to the resolve_heating_aggregation and resolve_electricity_aggregation functions:

if level == 'personal':
    entries = Heating.objects.filter(
                working_group__id=info.context.user.working_group.id
            )
    averaged_entries = entries / working_group/n_employees # somehow calculate average

[redfrexx]

Could you send the query using level=group and then just use the value of co2e_cap as co2e for personal absolute co2e emissions?

[redfrexx]

But adding level=personal as an option wouldn't be much work, I've actually just done it but the 'co2e' value is still the one for the whole group. Could be easily be changed to the value of 'co2e_cap' in the backend though.

[redfrexx]

But adding level=personal as an option wouldn't be much work, I've actually just done it but the 'co2e' value is still the one for the whole group. Could be easily be changed to the value of 'co2e_cap' in the backend though.

I've quickly implemented it, since it does seem like the cleaner solution to take care of the emission calculation in the backend. Opened a PR for it.

[sami1riaz]

Can this be closed?

[codingfabi]

Yes, closed by #241 and #238