Crm 13973 qa : fixes for points mentioned in #comment-58325

 "BUG: Fee amount in participant table is not always updating on Change Selections." - couldn't replicate it.

Also apart from mentioned comment fixes, this PR also consists of the status update point fix mentioned in comment : http://issues.civicrm.org/jira/browse/CRM-13973?focusedCommentId=58320#comment-58320