Fix to allow creation of new changes from web interface

application/views/approval_chain_manager.xhtml

@@ -160,6 +160,7 @@
                                                  array('class' => 'action_type_select'),
                                                  $this->approvalActions); ?>
                 </label>
+                <?php if ($this->approvalChain->getPrimaryKey()) { ?>
                 <label class="participating_roles">
                     Participating Roles:<br/>
                     <?php echo $this->formSelect('participatingRoles', null,
@@ -168,6 +169,7 @@
                                                     'name', ApprovalBodyRoles::getInstance()->getPrimaryKeyName()
                                                  )); ?>
                 </label>
+                <?php } ?>
                 <div class="edit_approval_chain_specifics clear"></div>
             </div>
             <?php echo $this->formSubmit('submit', 'Create'); ?>