Revert "OBMFULL-6103 Do the same thing for AddressBookBinding (lastsync - transactionTimeout)"

This reverts commit 894faf37e7dbc1636c6c5ee0f524442fba0ab2fc.
Revert "OBMFULL-6103 Subtract lastSync by conf.transaction-timeout between CalendarBinding and EventHandler. It only concerns getSync and it's the only path before serializing the EventChanges then send it back to the client"

This reverts commit 1fdc5fa99aa2bf66204f1847cc495c8f735c2e64.
Bumped POMs and UI to 2.5.9-alpha3
Bumped changelogs version to 2.5.9-alpha3
Revert "Bumped POMs and UI to 2.5.9-alpha3"

This reverts commit 3cff368d9fa8e93e5e8b70935f6571325e91257f.