Move plugin tests at first/last positions
Add shortcode CSS classes
Add shortcode test

* Add timezone to start script
* Remove unneded require from plugin tests
Remove 3rd unused param from save_post subscription
Add test's buttons only on wptest screen
Avoid WP_Post in Test Editor
Avoid direct usage of WP_Post class
Use h3 at results page (more often has style)
Avoid direct usage of WP_Screen class
Fix memory limit under WP 3.4 and PHP 5.3

* Increase memory limit
* Add bash mailer (mutt)
Merge branch 'issue/test-shortcode' into develop