N°4207 N°4298 Fix data/.maintenance flag not removed by setup anymore

Was already fixed in the develop branch
(cherry picked from commit d0986c048a)
(cherry picked from commit 9126635cf2)

setup/ajax.dataloader.php

@@ -32,7 +32,8 @@
  * 'file': string Name of the file to load
  * 'session_status': string 'start', 'continue' or 'end'
  * 'percent': integer 0..100 the percentage of completion once the file has been loaded 
- */ 
+ */
+$bBypassMaintenance = true; // Reset maintenance mode in case of problem
 define('SAFE_MINIMUM_MEMORY', 64*1024*1024);
 require_once('../approot.inc.php');
 require_once(APPROOT.'/application/utils.inc.php');