App now stores the selected workout and the todaysExercisesCompleted list. This way it is possible to load them when resuming the application. Also removed the possibility of inputing the layoutfile for ListTwoButtonsFragment. This caused a resource id crash when going back to the app after using other apps. If the functionality to input the layout file is needed, the resource field must be instanciated with a default file which can later be overridden in ListTwoButtons.newInstance():