SelectMuscleDialog: the selected muscle will now be stored as mMuscle.
Moved SelectMuscleDialog to a different package.
FExDetailFragment: removed unnecessary menu items.
Bugfix TrainingEntryListAdapter: fixed deleting entries.
Added example Workout.

It will be shown when there are no other workouts.
DialogFragmentAddEntry: the textview can now switch between "add entry" and "edit entry"