Remove a manual step in installation process because this is now always done by default by installer.

Fix: Data in memory must always be encoded in utf8. PHP files functions need ISO, so we convert data just before and after using them.

Fix: Data in memory must always be encoded in utf8. PHP files functions need ISO, so we convert data just before and after using them.

Fix: Data in memory must always be encoded in utf8. PHP files functions need ISO, so we convert data just before and after using them.

Qual: Code to support filter on entity on objects navigation is simpler.