Lots of minor code changes… see extended description

* Fixed bug where the JScrollPane would not automatically scroll down
when text was appended to consoleMessages.
* Fixed bug where the height of the JScrollPane would not adjust when
the height of the window changed.
* Fixed bug where the "Enter" button would go below the input box when
the width of the textbox was too small for inputpanel.
* Default Close Operation changed again.
* Changed position of the new line in EnterText(<String>).
* Added meathod EnterText(<String>,<boolean>) so the program can enter
text without a new line.
* Added feature: User's number is shown after the question after
entering it.
* Added command: /clearfile to clear the file that records output and
input.
* Reset the Look and Feel to the system default.