fix upload to dailymotion through phraseanet bridge

lib/Alchemy/Phrasea/Controller/Prod/Bridge.php

@@ -426,6 +426,7 @@ class Bridge implements ControllerProviderInterface
                   , 'account' => $account
                   , 'error_message' => $app['request']->get('error')
                   , 'notice_message' => $app['request']->get('notice')
+                  , 'constraint_errors' => null
                   , 'adapter_action' => 'upload'
               );
 

lib/classes/Bridge/Api/Dailymotion.class.php

@@ -971,12 +971,6 @@ class Bridge_Api_Dailymotion extends Bridge_Api_Abstract implements Bridge_Api_I
             'length_min' => '0',
             'required' => true
         )
-        , array(
-            'name' => 'category',
-            'length' => '0',
-            'length_min' => '0',
-            'required' => true
-        )
     );
   }