Crypter.java: toMorse-method gets and handles user input text as a parameter.

toMorse-method gets a string as a parameter and compares its characters
to the characters of the arrays of the class. After that characters are
changed to normal characters or code depending the nature of the parameter
string.

Signed-off-by: Roope Rantanen <roopepe@hotmail.com>
GUI: Add functionality to "Crypt-it!" button.

Add an actionlistener to register "Crypt-it!"-button clicks.

When the "Crypt-it!" button is clicked and the textfields are not empty,
due to the added functionality user input will be passed as a parameter
to Crypter classes toMorse-method which will return crypted text as a string.

The returned string will be then set as a text to the right side textfield.

Signed-off-by: Roope Rantanen <roopepe@hotmail.com>