CI migration/automation + new test to ease iTop release management

- new Jenkinsfile and .jenkins removal to launch phpunit/behat tests
triggered on both iTop build and push.
 - N°3053 - Check XML conversion methods
 - N°3057 - New build recipe
 - N°3059 - Automatically set the documentation URLs
 - N°3052 - Check community modules XML version against latest version
 - N°3054 - Check community modules version against major version
 - N°3062 - setup.css file integrity test
 - N°3060 - Check consistency between the list of modules and installation.xml
 - Add exclusion group for CI
 - N°3061 - Automatically check the installation.xml consistency

setup/itopdesignformat.class.inc.php

@@ -41,7 +41,7 @@ define('ITOP_DESIGN_LATEST_VERSION', '1.7'); // iTop >= 2.7.0
  */
 class iTopDesignFormat
 {
-	protected static $aVersions = array(
+	public static $aVersions = array(
 		'1.0' => array(
 			'previous' => null,
 			'go_to_previous' => null,
@@ -89,7 +89,7 @@ class iTopDesignFormat
 			'go_to_previous' => 'From17To16',
 			'next' => null,
 			'go_to_next' => null,
-		),
+		)
 	);
 
 	/**