[BUGFIX] Use proper implementation of a wordwrap

The page module uses a custom implementation of a wordwrap
as this was not supported by the browser in those earlier days.

The big drawback is that there is no UTF8 support for this which
leads to empty preview boxes when e.g. using Japanese.

The 6.1 version of this patch changes the wordWrapper() usage only
and does not deprecate the method.

Change-Id: I7caab8e14a9a0b7ccbd38c692b0cf98635967567
Resolves: #15797
Releases: 6.2, 6.1
Reviewed-on: https://review.typo3.org/22890
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Incorrect check for empty folder

The condition in ResourceStorage::deleteFolder is wrong.
Negate the isFolderEmpty() clause.

Resolves: #50125
Releases: 6.2, 6.1, 6.0
Change-Id: Ia60f3e97ff8d1e0cc2671cec1b31cfc995c235b1
Reviewed-on: https://review.typo3.org/22888
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters