CRM-14047 - add clarification text to Total Fee(s) display

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* CRM-14047: Online event registration: add text to clarify the meaning of the Total Fee(s) calculated value
  http://issues.civicrm.org/jira/browse/CRM-14047
Merge pull request #2292 from davecivicrm/CRM-14047

CRM-14047 - add clarification text to Total Fee(s) display