-- CRM-13557 suppressed hash

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* CRM-13557: Contact Hash is appearing on manual merge screen and should be suppressed
  http://issues.civicrm.org/jira/browse/CRM-13557
-- CRM-13557 also suppressed other invalid fields

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* CRM-13557: Contact Hash is appearing on manual merge screen and should be suppressed
  http://issues.civicrm.org/jira/browse/CRM-13557
Merge pull request #1778 from ravishnair/CRM-13557fix

-- CRM-13557 suppressed invalid fields during manual merge