create a GUI for the backup client

[Thomas Niebler]

For most users, it is pretty difficult to figure out how to use the backup client in its current form (command line isn't home territory for everyone).

Because the configuration and action possibilities of the backup client are not very many, it should be possible to create a small GUI program for the backup client. This isn't really necessary but would be a great help for many people.

[Robert Jäschke]

The GUI should be decoupled from the existing backup client such that we can have the console version and the GUI in parallel. For that, the client certainly needs to be refactored such that it's core (controller) is properly encapsulated and decoupled from the user interaction (view).

[Daniel Zoller]

moved to backup-client project