Correction warning html

app/View/Organisations/selectorganisation.ctp

@@ -37,7 +37,7 @@
 
         <div class="row form-horizontal form-group buffer-top" style="margin-top: 24px;">
             <?php
-                echo $this->Form->button('<i class="fa fa-sign-in fa-fw"></i>' . ' ' . __d('user','user.btnConnexion'), [
+                echo $this->Form->button('<i class="fa fa-sign-in fa-fw">&nbsp;</i>' . ' ' . __d('user','user.btnConnexion'), [
                     'type' => 'submit',
                     'class' => 'pull-right btn btn-primary'
                 ]);