Changes to the setDisplay method, starting to get the right radiobutton selected, on start.
Changes to the write method which writes the entire arraylist to a file, line by line, adding spaces in between items, on the same line.
Added the fillArray method, which fills an ArrayList (of arraylists of Strings) full of the contents of the config file. It reads the file line by line and takes out the spaces in between items on the same line.
Added more if and else statements to select the correct radiobutton under setDisplay()