Use a logging interface

[larsgrefer]

not ready to merge yet

[SecUpwN]

@larsgrefer, when pressing Debugging in our app the log appears. What are you trying to do?

[larsgrefer]

Don't use android.util.Log directly, but use an Interface + android-specific Implemenation

just have a look at the diff

[SecUpwN]

just have a look at the diff

I did, it now makes sense: You're just changing the way we log stuff, displaying it stays the same.
I'm granting permission to you to merge this whenever you feel it is ready. See ya later, aligator!

[SecUpwN]

Since branch feature/logging still exists, could you also have a look at #201, #208 and #583? Thanks!