[TASK] refactor AccessUtility

[calien666]

          As I cannot comment it on the class above, I'm doing it here how - also not related to this change.

Not for this change, but for a followup - I would suggest to transform this to a shared stateless service instead and let it be injected into the classes needing it.

Furthermore, the checkTableIsAllowedOnPage is using a static property to share a DataHandler instance. This is a completly no-go.

a) Static utility classes are required to be stateless !
b) DataHandler is a stateless class, and should not be shared

So, if the internal state should be reshared, better use a RuntimeCache (can be injected if this class is transformed from a static utility class to a shared service) and cache the $pageId, $tablename result directly and only call the datahandler method (on a new instance) if needed.

So please do me at least the favour to add a proper class todo comment that this class should be refactored to a stateless service and removing the datahandler reusage / property.

Originally posted by @sbuerk in #35 (comment)