[BUG] Too much recursion kills apache

Replacing RegEx by explode function

Change-Id: Ic15289f84b25a4753af44fc87686b694eea47ed8
Fixes: #45687
[FEATURE] Creating User Rights

Allows to disabling the edit-function for guests

Change-Id: I990c81a0112b47be6c32e02a26a710037c0da067
Refs: #40636
Merge branch 'master' of git://git.typo3.org/TYPO3v4/Extensions/typo3wiki