CRM-12618 This includes Nicolas Ganivet patch to prevent editing of event fee...

CRM-12618 This includes Nicolas Ganivet patch to prevent editing of event fee for paid additional participants, and fix to hide Record Payment checkbox for them as well.

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* CRM-12618: Event registration edit screen for additional registrants is incorrect
  http://issues.civicrm.org/jira/browse/CRM-12618

CRM/Event/Form/Participant.php

@@ -233,6 +233,18 @@ class CRM_Event_Form_Participant extends CRM_Contact_Form_Task {
       $this->_paymentId = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_ParticipantPayment',
         $this->_id, 'id', 'participant_id'
       );
+      // CRM-12615 - Get payment information from the primary registration
+      if ((!$this->_paymentId) && ($this->_action == CRM_Core_Action::UPDATE)) {
+        $registered_by_id = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Participant',
+          $this->_id, 'registered_by_id', 'id'
+        );
+        if ($registered_by_id) {
+          $this->_paymentId = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_ParticipantPayment',
+            $registered_by_id, 'id', 'participant_id'
+          );
+          $this->assign('registeredByParticipantId', $registered_by_id);
+        }
+      }
     }
 
     // get the option value for custom data type

templates/CRM/Event/Form/EventFees.tpl

@@ -48,7 +48,7 @@
        </fieldset>
         {else}
       {assign var=isRecordPayment value=0 }
-            <div class='messages status'>{ts}No any active price fields found for this event!{/ts}</div>
+            <div class='messages status'>{ts}No active price fields found for this event!{/ts}</div>
           {/if}
     </table>
     {/if}
@@ -56,7 +56,7 @@
     </tr>
  {/if}
 
-    { if $accessContribution and ! $participantMode and ($action neq 2 or !$rows.0.contribution_id or $onlinePendingContributionId) and $isRecordPayment }
+    { if $accessContribution and ! $participantMode and ($action neq 2 or !$rows.0.contribution_id or $onlinePendingContributionId) and $isRecordPayment and ! $registeredByParticipantId }
         <tr class="crm-event-eventfees-form-block-record_contribution">
             <td class="label">{$form.record_contribution.label}</td>
             <td>{$form.record_contribution.html}<br />