Fix a missing new year update.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56032 75b3775d-3801-0410-9e12-e2e43121521d
Add copyright headers.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56033 75b3775d-3801-0410-9e12-e2e43121521d