Build Admin Lock Account Flow in Demo App

[devondragon]

The DemoApp portion of this devondragon/SpringUserFramework#32

[create-issue-branch]

Branch issue-27-Build-Admin-Lock-Account-Flow-in-Demo-App created!

[UditThakkar]

@devondragon created a PR for this, please help to check.
Thanks

[devondragon]

Done and thank you very much @UditThakkar !!!