Privacy Browser Android

With the recent implementation of per-app language settings (see https://redmine.stoutner.com/issues/910) it is also possible to change this system settings from inside the app.

https://developer.android.com/guide/topics/resources/app-languages#api-implementation

However, it looks to be a bit difficult to implement and I am not sure it is worth the work. I would imagine that most users would not be interested in switching languages often, and the system-level controls are not so difficult to access that I would imagine they would be inconvenient for the times when a user does want to switch languages. About the only advantage I can see is that it would allow the language to be imported and exported along with the rest of Privacy Browser's settings.