#16 License handling

[krebu]

a.) The "license" is shown in the properties. For the time being it can not be edited.
b.) The license is also shown in the about cardset.
c.) The license requirements for card sets is added to the documentation
d.) The license text (that is used) is a property in the startup process.

Followup:

Datum: 2005-04-22 11:26
Sender: guenter
Angemeldet: JA
user_id=106

The text commes from a variable that can be set in a property
file.