-- added filter in activity search to search follow up activity, CRM-14112

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* CRM-14112: Add Followup filtering criteria to Activity Search
  https://issues.civicrm.org/jira/browse/CRM-14112
-- minor change CRM-14112

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* CRM-14112: Add Followup filtering criteria to Activity Search
  https://issues.civicrm.org/jira/browse/CRM-14112
Merge pull request #3152 from pradpnayak/CRM-14112

Crm 14112