[postgresq] SA limited functionality for non-superusers

Schemas SQL Query for postgresql 9.1 unnecessarily references pg_catalog.pg_authid.
This table, because contains hashed passwords is readable only by superadmin roles.

Unfortunately attempt to access this table by non-superadmin user ends with exception, therefore effectively disable all intellisense SA functionality.

The fix is trivial: replace pg_authid with pg_roles.
pg_catalog.pg_roles is a view over pg_authid, with exception, it hides hashed passwords with asterisks.
Final SQL looks as follow:

	Code:
	SELECT nspname, 'SC', oid FROM pg_catalog.pg_namespace WHERE nspname NOT LIKE 'pg\_%' OR nspname = 'pg_catalog' UNION ALL SELECT rolname, CASE WHEN rolcanlogin THEN 'SL' ELSE 'SR' END, oid FROM pg_catalog.pg_roles

Now every user can use SA or SA Editor

Thank you very much again. I have submitted a high priority ticket for this one, reference #SA0033733