History for nurse

When the nurse presses the History button a new window appears where the user can visualize text that the patient wrote. 

1. List box with the date when the patient wrote and saved text. The nurse can chose one and see other details in the list box below;
2. List box with all the text that the patient wrote, and the hour;
3. Back button, returns to nurse interface;
4. Delete button, deletes the history from the selected day;
5. Deletes all history;
6. Exit button, closes the application.