…racteristic_instances - see HEA-573

Francophone BSS have `à` in row 4 in the WB worksheet in the summary columns
(`synthèse | de | à`). And `a` is an alias for the B/O Wealth Group Category (from
Aisé). So the previous code was matching that and thinking the data was for B/O
instead of part of the WB summary.

…income_expenditure_kcals

We don't use Pyrseas at all these days -
it is a legacy from before Django had full-featured
SQL migrations.

This changes allows setting LAUNCHER in .env
and then using VSCode to attach to the Python
process running inside the Docker container(s)