Bring travis test up to date

Flake and coveralls are installed and run automatically
Fix security error
Merge https://code.launchpad.net/~savoirfairelinux-openerp/openerp-shared/7.0/+merge/238441
Remove unit module testing so it can be fixed in another PR
removed salary_rule record because it makes hr_payroll_account test fail
Reactivate UNIT_TEST