Get namespace from imported object or field for faster initial load
Get namespace from imported object or field for faster initial load

Gift Entry was retrieving the namespace wrapper from Apex via
BDI_ManageAdvancedMappingCtrl.getNamespaceWrapper which instantiated
the controller, requiring processing time on the server.  This change
uses already imported fields or objects to infer the namespace,
reducing initial load time of the Gift Entry tab.

SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus,SalesforceFoundation/Cumulus