CRM-13398 - Update markup in Block.tpl for profile pre and post field help to match the <div> layout used in Dynamic.tpl. Fixes alignment issues.

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* CRM-13398: Profile pre and post field help markup in Block.tpl messes up page layout
  http://issues.civicrm.org/jira/browse/CRM-13398
Merge pull request #1643 from davecivicrm/CRM-13398

CRM-13398 - Update markup in Block.tpl for profile pre and post field he...