Display date as YYYY/MM/DD

[Aschen]

Description

Actually date are displayed as DD/MM/YYYY HH:MM:SS which can be confusing IMHO.

Instead we should display it like this: YYYY/MM/DD HH:MM:SS

So the entire date is from the biggest unit to the smaller unit.

[xbill82]

Let's do it, it's an easy and quick win