add db-quota to reseller-limits (#4056)

interface/web/client/form/reseller.tform.php

@@ -1267,6 +1267,20 @@ $form["tabs"]['limits'] = array (
 			'rows'  => '',
 			'cols'  => ''
 		),
+		'limit_database_quota' => array (
+			'datatype' => 'INTEGER',
+			'formtype' => 'TEXT',
+			'validators' => array (  0 => array ( 'type' => 'ISINT',
+				'errmsg'=> 'limit_database_quota_error_notint'),
+			),
+			'default' => '-1',
+			'value'  => '',
+			'separator' => '',
+			'width'  => '10',
+			'maxlength' => '10',
+			'rows'  => '',
+			'cols'  => ''
+		),
 		'limit_cron' => array (
 			'datatype'  => 'INTEGER',
 			'formtype'  => 'TEXT',