OAuth mechanism isn't working

[niwakame]

We need a functioning OAuth mechanism for authentication

UI

• Could be done on settings page
• Need a button to remove the auth from the client

Model

• Use QSettings for storage of token ?

[funkycode]

I think that part should be more independent and less integrated in app, in order if we decide to auth different way (using different lib or harmattan account system), so it would be easier to change it with less changing core code of app.