[BUGFIX] Enable clearcacheonload

Resolves: #60929
Change-Id: I1adb096d1c46a120ec0d6bd8b3f8d15799ff5298
Reviewed-on: http://review.typo3.org/32185
Reviewed-by: Tim Lochmüller <tim@fruit-lab.de>
Tested-by: Tim Lochmüller <tim@fruit-lab.de>