add possibility to enable/disable backup function

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

actions/admin/settings/110.accounts.php

@@ -186,6 +186,15 @@ return array(
 						)
 					),
 				),
+				'system_backupenabled' => array(
+					'label' => $lng['serversettings']['backupenabled'],
+					'settinggroup' => 'system',
+					'varname' => 'backupenabled',
+					'type' => 'bool',
+					'default' => false,
+					'cronmodule' => 'froxlor/backup',
+					'save_method' => 'storeSettingField'
+				),
 			),
 		),
 	);