Update copyright year and make it translatable

Author:    Aurimas Fišeras <aurimas@members.fsf.org>

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@23014 57a11ea4-9604-0410-9ed3-97b8803252fd
Update gitignore

Author:    Aurimas Fišeras <aurimas@members.fsf.org>

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@23015 57a11ea4-9604-0410-9ed3-97b8803252fd