added unit tests to repository
added .gitignore file
added popup with workout print view. View is not finished yet, though.
fixed a tiny bug in the exercise library
added minimum reputation level required to edit exercises in the exercise library. Required leven can be set in web.config under "EditExerciseRequiredLevel"
changed fonts for headlines
added out parameter WorkoutCount to List- and ListAll-methods of WorkoutService.cs which gives the total amount of available workouts.