Fix showing system views. Rename catalogfunctions-test to sqltables-test

There's a dialog box option to show system tables, and I included system views now if that dialog box is checked. Alternatively, we could create a new dialog box option for system views, but I think if the user checks "show system tables", they are expecting to see anything system related.

Also renamed catalogfunctions-test (old name from psqlodbc) to sqltables