gen_catalogue() fails on many databases

gen_catalogue() structures the output based on the internal tree structure based on the EVAS numbers, however many Genesis databases have table codes that aren't part of the EVAS structure.

Therefore I'd suggest, that by default gen_catalogue() should only return the flat list the API itself returns without further modification.

In detail and for testing purposes:

The Bavarian Genesis instance e.g. has tables starting with JB for Jahrbuch (yearbook) thus the following fails completely:

gen_catalogue(database="bayern", category="tables", code="j*")

and

gen_catalogue(database="bayern", category="tables", code="*")

omits the JB tables.

In the Census database table codes don't follow the EVAS system either because the census itself is only a single EVAS category. Table codes are
Code: 1000A – Population in brief.
...
Code: 4000W – Dwellings

However while gen_catalogue(database="zensus", category="tables", code="4*") does return 4* Table codes, it tries to structure the output in the EVAS tree and puts it in "4 Wirtschaftszweige" which is inappropriate.

Interestingly in the Bildung database, where table codes start with the state abbreviation (SH,HH,NI,HB…) this works.
gen_catalogue(database = "bildung", category = "tables", code = "TH*")