[BUGFIX] Adjust hooks after moving/namespacing

Change-Id: I4e8de22ee8b04bcee8dabbc3bce1203f68146f51
Fixes: #43676
Releases: 6.0, 6.1
Reviewed-on: https://review.typo3.org/17481
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel
[BUGFIX] Add access check in FAL renameFolder()

Currently no access check is done when trying to rename a folder.
This is marked also as todo in the code.

Change-Id: Ie1909804c0ccc7cfa5c495ba98322cad7d712c96
Fixes: #44425
Releases: 6.1,6.0
Reviewed-on: https://review.typo3.org/17445
Reviewed-by: Andreas Wolf
Reviewed-by: Mattias Nilsson
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel
Reviewed-on: https://review.typo3.org/17483
[BUGFIX] File-Upload does not sanitize umlauts in filenames

This patch sanitizes file names for uploaded files, fixing thumbnail
and deletion issues for files with umlauts.

Change-Id: I9c02e357b7b37d1c09656ed14f50a8adb7593d52
Fixes: #42925
Releases: 6.0, 6.1
Reviewed-on: https://review.typo3.org/17486
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel