[doc] Fix option_*() migration commands in doc The function signature in the doc is not the same as in the code. Also option_removed should probably be removed from the doc since the function in migration.py is empty

[massive store] ensure the cwmassive_initialized table is deleted if needed This may be necessary if a previous import did badly crached, leaving the cwmassive_initialized behind.

[server] fix deserialize_schema to handle properly pg schema (closes 17076486) Postgres behaviour is to look first for a table in the configured schema then fall back to 'public' if no table is found. This must be implemented in deserialize_schema when listing existing tables to check for computed relations (cw_cwcomputedrtype) otherwise computed relations may not work when using non-default pg schema.