EventParticipation Trial Master Improvements

[LatidoReMe]

Currently for Trial Master events, you can select whether you've earned the Trial Master title, or the EX Trial Master title. While this works just fine, we could improve the selection + display of this due to the trial masters being obtained in progression.

1. Form: Don't show EX option until Normal is checked. You can't get an EX w/o a Normal, so doing this makes the form smaller and more straightforward for many players. Alternatively, create a selector of No, Trial Master, and Trial Master EX, so that you avoid selecting options for more than needed.
2. ItemView: Reduce Trial Master to one field. Instead of having this: you could just change the verbose of the field depending on the result, making it simpler + smaller in the end.