CRM-13908 - Contribution - Allow smart group creation from Aggregate Contribution search

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* CRM-13908:
  http://issues.civicrm.org/jira/browse/CRM-13908
CRM-13908 - Contribution - fixing indentation.

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* CRM-13908:
  http://issues.civicrm.org/jira/browse/CRM-13908
Merge pull request #2158 from jmcclelland/aggregate-contribution-search-smart-group

Aggregate contribution search smart group