Results 3 issues of Pavel

I get error: ``` com.google.api.client.http.HttpResponseException: 401 Authorization Required Desktop applications only support the oauth_callback value 'oob' /oauth/request_token ``` When I changed OAUTH_CALLBACK_URL value to "oob" this error code no longer...

![gadgetbridge](https://user-images.githubusercontent.com/611744/44339398-da9d0b00-a489-11e8-9947-f8907ba76836.png)

For ease of orientation in the area it would be great: * display the path of movement (At least within a day). * display the rotation angle of the map...