CRM-13364 - Date fields in all popups should display calendar icon

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* CRM-13364: Date fields in all popups should display calendar icon
  http://issues.civicrm.org/jira/browse/CRM-13364
Merge branch 'CRM-13364Css' of git://github.com/vivekarora/civicrm-core into pull-request-1655
CRM-13364 - Use .crm-container-snippet instead of .ui-dialog

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* CRM-13364: Date fields in all popups should display calendar icon
  http://issues.civicrm.org/jira/browse/CRM-13364