mofigy get method arg's type from String to DeviceProperty refs #3869
Merge branch 'devGetArgs' into mergeDev
return before inform when new nickname already exists refs #3914
update DevcieManager#completeAccessDeviceProperty() for get method with arguments
App Exit by back key. refs #8
Additional commit of a3c71b91bfd89936b40c210503db68df5559d02a(App Exit by back key. refs #8)