Merge remote-tracking branch 'origin/support/3.0' into support/3.1

# Conflicts:
#	application/applicationextension.inc.php
#	application/cmdbabstract.class.inc.php
#	core/dbobject.class.php
#	core/kpi.class.inc.php
#	core/metamodel.class.php
#	lib/composer/autoload_classmap.php
#	lib/composer/autoload_static.php
#	tests/php-unit-tests/unitary-tests/setup/DBBackupTest.php

application/applicationextension.inc.php

@@ -2246,3 +2246,27 @@ interface iModuleExtension
 	 */
 	public function __construct();
 }
+
+/**
+ * KPI logging extensibility point
+ *
+ * KPI Logger extension
+ */
+interface iKPILoggerExtension
+{
+    /**
+     * Init the statistics collected
+     *
+     * @return void
+     */
+    public function InitStats();
+
+    /**
+     * Add a new KPI to the stats
+     *
+     * @param \Combodo\iTop\Core\Kpi\KpiLogData $oKpiLogData
+     *
+     * @return mixed
+     */
+    public function LogOperation($oKpiLogData);
+}