CRM-13981, Handling Soft Credit for Gift Membership

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* CRM-13981: Migrate "In Honor of" to Soft Credits
  https://issues.civicrm.org/jira/browse/CRM-13981
Merge pull request #3187 from monishdeb/CRM-13981

CRM-13981, Handling Soft Credit for Gift Membership
CRM-13776 limit the reminder to 'administer CiviCRM' permission
Merge pull request #3189 from yashodha/CRM-13776

CRM-13776 limit the reminder to 'administer CiviCRM' permission