Added PHP 7 check in installer and updater.

Till Brehm

2016-04-22 ebd0e986ed11f2a34fb58cdd33efbfab192083ad

 interface/web/sites/user_quota_stats.php

@@ -41,6 +41,9 @@
      $rec['bgcolor'] = $this->DataRowColor;
      $username = $rec['system_user'];

      $server = $app->db->queryOneRecord("SELECT server_name FROM server WHERE server_id = ".$rec['server_id']);
      $rec['domain'] = $rec['domain'].($server['server_name'] != '' ? ' ('.$server['server_name'].')' : '');
		
      $rec['used'] = $monitor_data['user'][$username]['used'];
      $rec['used_sort'] = $rec['used'];
      $rec['soft'] = $monitor_data['user'][$username]['soft'];