(0.4.5) ProgressBar not hiding properly, maven repo code does not match github repo

[MikeRzDev]

Hi, first of all thank you for putting effort to simplify the Oauth flow mess. i have noticed 2 issues at this moment.

1. progressbar doesnt always hide when the authentication dialog finishes its rendering.
2. I suppose that the github repo code should match the code stored in maven repo but it isnt, actually you require to download the repository and import the library as a project.