Merge branch 'custom_Block_deletion' into 'master'

Fixes #1225 Custom block deletion with no fields

See merge request !519

modules/Settings/LayoutEditor/actions/Block.php

@@ -80,8 +80,8 @@ class Settings_LayoutEditor_Block_Action extends Settings_Vtiger_Index_Action {
         $response = new Vtiger_Response();
         $blockId = $request->get('blockid');
         $checkIfFieldsExists = Vtiger_Block_Model::checkFieldsExists($blockId);
-        if(!$checkIfFieldsExists) {
-            $response->setError('502','Fields not exists for the block');
+        if($checkIfFieldsExists) {
+            $response->setError('502','Fields exists for the block');
             $response->emit();
             return;
         }