add a textfield `allowance` to the person-detail collection

[sennierer]

add all texts of text.kind.name == "Diverses" Texts are in PERSON.texts.filter(kind__name="Diverses")

[sennierer]

while the documents I open seem to have the field included, I cant search the index for entries that actually contain data in that field as the field is not included in the schema. I guess we would need to also add the fields here?

[sennierer]

just found out that it is nonetheless shown in the frontend, so it might not be a problem