CRM-14798 - add class to lock icon to keep it on same line as form field.

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* CRM-14798:
  https://issues.civicrm.org/jira/browse/CRM-14798
Merge pull request #3568 from davecivicrm/CRM-14798

CRM-14798 - add class to lock icon to keep it on same line as form field...