Merge branch 'develop' of bitbucket.org:colosa/processmaker into bugfix/HOR-2814-A

workflow/engine/src/ProcessMaker/BusinessModel/FilesManager.php

@@ -152,7 +152,8 @@ class FilesManager
     {
         try {
             $aData['prf_path'] = rtrim($aData['prf_path'], '/') . '/';
-            if (!$aData['prf_filename']) {
+            $path = pathinfo($aData['prf_filename']);
+            if (!$aData['prf_filename'] || $path['dirname'] != '.') {
                 throw new \Exception(\G::LoadTranslation("ID_INVALID_VALUE_FOR", array('prf_filename')));
             }
             $extention = strstr($aData['prf_filename'], '.');