Modified Action objective for greater flexibility

It is now possible to detect clicking in air
It is no longer possible to detect clicking on any block (as this accepts clicking on air)
Can be used to detect book reading (with help of updated Hand condition)

Signed-off-by: Co0sh <coosheck@gmail.com>
Modified updater so it does not create duplicate items

Signed-off-by: Co0sh <coosheck@gmail.com>