-- CRM-15475, Retrieved value for membership status id regardless of civicrm_membership_status.is_active field

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, Used Contribution status Pseudoconstant to fetch id rather then using getfield value function

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, changed Cancelled mmebership status to reserved

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
-- CRM-15475, Added upgrade code to make Cancelled status as reserved

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* CRM-15475: Fatal error on membership page if membership status 'Cancelled' is disabled
  https://issues.civicrm.org/jira/browse/CRM-15475
Merge pull request #4492 from pradpnayak/CRM-15475

Crm 15475