BUG: Autocomplete includes random keywords, but does not include table names for the default schema

[rathboma]

1. Connect to PostgreSQL dev database
2. Start a new query
3. Type "select * from f"
4. It should autocomplete film, but it autocompletes a bunch of nonsense, none of the entries are tables in public

Fully qualified table names appear, for example public.film, but not film.

Also: tables from the default schema should be at the top of the autocomplete list.

After fixing, make sure the following work:

• type from, a list of tables should show up
• type join, a list of tables should show up
• Give a table an alias, eg from film f, then type f., a list of the columns of film should show up