Remove indexes from program.(actors|directors)

Actors&Directors are queries from their own collection.
This was left over from previous actor|director autocomplete.
Update program.publicFields

Don't send program.createdBy || sentRegistrationEmailAddresses to ikarajat.fi
Don't update Actor/Director/ProductionCompany collections when reclassifying

Otherwise this will pollute e.g. the ProductionCompany index with legacy data. We only wan't production companies entered thru the new ui.

Anyway, the fields are not editable in the UI on reclassification.
Fix Account.apiToken leaking to UI

* GET /accounts/search is used in classification-form and user-management for select2-autocomplete's only -> so only returning id+name
* GET /accounts/:id was only used for classification-form email address loading -> so making it more specific