[TASK] Update copyright year to 2013

In this patch are also some fixes for files containing
a interface. Due the namespace change all interfaces
have the curly bracket not on the same line as the
interface name.

Change-Id: I64ba45de73693452d681ce7f018965968b11d2af
Resolves: #46370
Releases: 6.1
Reviewed-on: https://review.typo3.org/18984
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn