Add test to prove issues with deleteAll with $order set
Set 'order' to false to prevent issues with postgres

See: https://github.com/cakephp/cakephp/pull/2421#issuecomment-30074971
Merge pull request #2450 from rchavik/2.4-delete-all-regression

2.4 delete all regression
Attempt to fix errors with postgres tests.
Change quotes to keep postgres happy.