Clean up a few more places username was used instead of displayName
Clean up a few more places username was used instead of displayName

ngageoint/mage-server,ngageoint/mage-server,jclark118/mage-server,newmanw/mage-server,ngageoint/mage-server,jclark118/mage-server,newmanw/mage-server,ngageoint/mage-server,jclark118/mage-server,newmanw/mage-server