Merge branch 'fix-db-stats' into 'stable-3.1'

Fix db stats - Please review

I think I found the fix... Please review if that's correct tough.
I just added  sys_group.groupid = web_database.sys_groupid AND

closes ispconfig/ispconfig3#3963
closes ispconfig/ispconfig3#3920

See merge request !355

Author: Till Brehm

interface/lib/classes/quota_lib.inc.php

@@ -312,13 +312,13 @@ public function get_databasequota_data($clientid = null, $readable = true) {
 
 				$databases[$i]['quota_raw'] = $databases[$i]['database_quota'];
 				$databases[$i]['used_raw'] = $databases[$i]['used'] / 1024 / 1024; //* quota is stored as MB - calculated bytes
-				$databases[$i]['used_percentage'] = (($databases[$i]['database_quota'] > 0) && ($databases[$i]['used'] > 0)) ? round($databases[$i]['used'] * 100 / $databases[$i]['database_quota']) : 0;
+				$databases[$i]['used_percentage'] = (($databases[$i]['database_quota'] > 0) && ($databases[$i]['used'] > 0)) ? round($databases[$i]['used_raw'] * 100 / $databases[$i]['database_quota']) : 0;
 
 				if ($readable) {
 					// colours
 					$databases[$i]['display_colour'] = '#000000';
 					if($databases[$i]['database_quota'] > 0){
-						$used_ratio = $databases[$i]['used']/$databases[$i]['database_quota'];
+						$used_ratio = $databases[$i]['used'] / $databases[$i]['database_quota'];
 					} else {
 						$used_ratio = 0;
 					}

interface/web/sites/database_quota_stats.php

@@ -29,7 +29,7 @@
 		foreach($tmp_array as $database_name => $data) {
 			$db_name = $data['database_name'];
 
-			$temp = $app->db->queryOneRecord("SELECT client.username, web_database.database_quota FROM web_database, sys_group, client WHERE sys_group.client_id = client.client_id AND web_database.database_name = ?", $db_name);
+			$temp = $app->db->queryOneRecord("SELECT client.username, web_database.database_quota FROM web_database, sys_group, client WHERE sys_group.groupid = web_database.sys_groupid AND sys_group.client_id = client.client_id AND web_database.database_name = ?", $db_name);
 			if(is_array($temp) && !empty($temp)) {
 				$monitor_data[$server_id.'.'.$db_name]['database_name'] = $data['database_name'];
 				$monitor_data[$server_id.'.'.$db_name]['client'] = isset($temp['username']) ? $temp['username'] : '';