Add created by text

lang/en/texts.php

@@ -5614,6 +5614,7 @@ $lang = array(
     'include_project_tasks_help' => 'Also invoice tasks that are part of a project',
     'tax_nexus' => 'Tax Nexus',
     'tax_period_report' => 'Tax Period Report',
+    'created_by' => 'Created by',
 );
 
 return $lang;