Issue 93: Check the buttons for sorting of the table of students
Project Member Reported by ahtatoe....@gmail.com, Nov 21, 2013
1. Go to page "students"
2. Click "First name"
3. Restore the page "students" down
4. Click "Last name"
5. Restore the page "students" down
6. Click "Student No"
7. Restore the page "students" down
8. Click "ID"
9. Restore the page "students" down
10. Click "Birthday"

Expected result : 
  Table isn't be sorting. These buttons are not needed

Actual result : 
  The table is empty.