Crm 13973 #comment-59532

PR consists of : https://issues.civicrm.org/jira/browse/CRM-13973?focusedCommentId=59532&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-59532 fix.

A Notable change : We don't allow Additional participants to record payment, as the contribution is recorded against the primary participant.