A little more i18n

Provides German translation for latest additions

Publish a post with future date or time, it will go into scheduled posts.

Fully support PHP 8.x

Remove deprecated warning for PHP 8.x

Update it_IT.ini by @eagleman

Added the Greek Language by @StefanosSfaellos

Updated french translation by @Eliastik

Rss import pics BY @medmen

Update id_ID.ini by @sadja1024

Polish translation by @bartokopec

Korean translation by @kshman

Create ir_FA by @lotfihamid

Fix #570 Translation missing by @dolibarr95

Added all the missing strings and slightly updated the old ones.

Greek Language Addition

Fix #570 570 Translation missing
tks to @bttrx

Changed the value from 0 to -1

In PHP 8.1, preg_split handling null was deprecated. Changed null to 0

Polish translation by @mieszkou

Simplified Chinese translation (zh_CN.ini) by @MCUmbrella