If there is no conditions option, add a tautology

- If we're disabling IsParanoid, then we can't return an empty string
  from the conditions proc. If we do, it creates an empty clause in the
  sql fragment, e.g.  ((("foos".bar_id = 123456) AND (())))), which is
    not valid SQL.
- Replace that empty condition with a tautology, 1=1
Merge pull request #5 from RapGenius/fix_paranoid_through

If there is no conditions option, add a tautology