TravisCI performance improvement (task #6236)
TravisCI performance improvement (task #6236)

Run PHP CodeSniffer before PHPUnit.  Coding style checks are faster
and simpler, and if those fail, we don't have to wait for the whole
test suite to run.  Fail early instead.

QoboLtd/project-template-wordpress,QoboLtd/project-template-cakephp,QoboLtd/project-template-wordpress,QoboLtd/project-template-cakephp,QoboLtd/project-template-cakephp,QoboLtd/project-template,QoboLtd/project-template-cakephp,QoboLtd/project-template,QoboLtd/project-template,QoboLtd/project-template-cakephp,QoboLtd/project-template-wordpress,QoboLtd/project-template-wordpress