Set class to disabled for contact summary tabs which have 0 items in them.
Change Birth date labels to Birth Date to match title case used in other labels.
CRMDOC - Change various CRMDOCxx links to plain CRMDOC

Most of the source comments with documentation links should reflect current version.

For the "incremental upgrade" messages, I left the CRMDOCxx URLs in tact
because these messages could actually be version specific.
CRM-12845 - CRM_Utils_Migrate_Export - Add test

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* CRM-12845: CRM_Utils_Migrate - Handle CustomGroup subtypes
  http://issues.civicrm.org/jira/browse/CRM-12845
CRM-12845 - CRM_Utils_Migrate_Import - Add test

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* CRM-12845: CRM_Utils_Migrate - Handle CustomGroup subtypes
  http://issues.civicrm.org/jira/browse/CRM-12845
CRM-12845 - Change name of test-class to reflect dual purpose

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* CRM-12845: CRM_Utils_Migrate - Handle CustomGroup subtypes
  http://issues.civicrm.org/jira/browse/CRM-12845
Merge pull request #1456 from totten/master-migrate-test

CRM-12845 - Add unit tests for CRM_Utils_Migrate_*
Merge pull request #1455 from totten/master-crmdoc

CRMDOC - Change various CRMDOCxx links to plain CRMDOC
Fix contact type search builder CRM-13242
Rename help files to match new tpl names CRM-13225 CRM-11254

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* CRM-13225: Activity/Participant/Membership import is broken due to import resturcturing
  http://issues.civicrm.org/jira/browse/CRM-13225
Update controller params to DataSource instead of UploadFile CRM-13225 CRM-11254

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* CRM-13225: Activity/Participant/Membership import is broken due to import resturcturing
  http://issues.civicrm.org/jira/browse/CRM-13225
* CRM-11254: Create parent class for import
  http://issues.civicrm.org/jira/browse/CRM-11254
Merge pull request #1453 from davecivicrm/CRM-13176

Crm 13176
Merge pull request #1458 from colemanw/contactTypeSearch

Fix contact type search builder CRM-13242
Merge pull request #1459 from colemanw/import

Fix import classes CRM-11254/CRM-13225
CRM-13225 related fix for Membership Import during update

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* CRM-13225: Activity/Participant/Membership import is broken due to import resturcturing
  http://issues.civicrm.org/jira/browse/CRM-13225
Merge pull request #1460 from monishdeb/CRM-13225-QA-fix

CRM-13225 related fix for Membership Import during update