Change message text when pressing on GiveUp button

Summary:
When pressing on GiveUp:
result: "Congratulations, you answered correctly!"
expected result: Another message (do not congratulate for giving up)

Now, when pressing on "GiveUp" button, "Here is the answer" is shown.

Reviewers: sandroandrade

Subscribers: stefant

Tags: #minuet

Differential Revision: https://phabricator.kde.org/D4306