[TASK] Move css and JavaScript files in sys_action

Resolves: #62776
Releases: master
Change-Id: I4b21314c15953fa3c4f2a819cdb06fe771211f29
Reviewed-on: http://review.typo3.org/33896
Reviewed-by: Krzysztof Adamczyk <k.adamczyk@macopedia.pl>
Tested-by: Krzysztof Adamczyk <k.adamczyk@macopedia.pl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>