New achievement: Můj nejlepší turnaj

[PiechZ]

What's the achievement name? Můj nejlepší turnaj

What are the criteria for awarding this achievement? Awarded to a debater, that was on more than one tournament, stating the tournament, on which they had the beast peaker point average.

Is this aimed at a particular audience - e.g. new debaters, experienced debaters, judges or coaches? Debater

Implementation progress

• achievement named and described
• achievement criteria translated to SQL
• tests for columns added in achievements.yml
• model reference added to union_relations in final__all_achievements.sql
• achievement image generated and placed in frontend/public/achievement_backgrounds/