NIHVIVO-1207 Make the external auth-header a configuration property. Clean up SelfEditingIdentifierFactory and VitroRequestPrep.
NIHVIVO-1207 Make the external auth-header a configuration property. Clean up SelfEditingIdentifierFactory and VitroRequestPrep.

vivo-project/VIVO,vivo-project/VIVO,vivo-project/VIVO,vivo-project/VIVO