Revert 7725c0e..b7f74a7

This rolls back to commit 7725c0e6482102c249ffdf07ff5ca5397d64c6c9.
Revert d36b8fa..d3cccec

This rolls back to commit d36b8faa843dbde7cd5e9bbb81ec20209a398258.
Correcte uninstaller

_categories is a core table