Fixed and made consistent a few calls to CRM_Core_Session::setStatus().
Merge pull request #3548 from wellebee/CRM-14905

CRM-14905 - Fixed and made consistent a few calls to CRM_Core_Session::setStatus().
CRM-14905 - also fix contribution delete status.

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* CRM-14905:
  https://issues.civicrm.org/jira/browse/CRM-14905
Merge pull request #3562 from davecivicrm/CRM-14905

CRM-14905 - also fix contribution delete status.