Replaced lists with pluck in views

Updated various views where lists method was being used, replaced lists with pluck to make page working.

app/Http/Controllers/Admin/helpdesk/WorkflowController.php

@@ -144,7 +144,7 @@ class WorkflowController extends Controller
      */
     public function create(Emails $emails)
     {
-        $email_data = '';
+        $email_data = [];
         foreach ($emails->pluck('email_address', 'id') as $key => $email) {
             $email_data["E-$key"] = $email;
         }