Add check for CVE-2013-4491 (i18n XSS)
Add check for CVE-2013-6414 (header DoS)
Add check for CVE-2013-6415 (number_to_currency)
Add check for CVE-2013-6416 (simple_format XSS)
Add check for CVE-2013-6417 (query generation)
Adjust expected warnings for CVEs
Merge pull request #413 from presidentbeef/december_CVEs

Add checks for five latest CVEs

CVE-2013-4491
CVE-2013-6414
CVE-2013-6415
CVE-2013-6416
CVE-2013-6417