[FEATURE] Youth Tab enhancements

[vomme2020]

Is your feature request related to a problem? Please describe.
I would like to have some more details on the youth tab.

Describe the solution you'd like
I would like to have the player number in the list of attributes.
Would make it possible to sort by this as well.

I would like to have an additional field where notes can be maintained at player level - prefferably for each match.
This would make it possible to add personal observations and the trainer comments for that player for any given match.

Finally, it would be great if it could be configured, what columns to have under the player player tab.
Could be added to the existing preferenses->columns page with an additional dropdown value