So in my quest list it din't show what quest i have or completed but shows what merchants and trainers i have avaible. Is this a bug or not and i pressed some key pad and changed like that. If is that the case how can I change back to see quest list.

You can see the printscrn i attached below.

The image attached shows the alternative diary mode which is a feature implemented by the Update Pack. Clicking on the diary icon on the sidebar should switch the interface back to the original diary mode.