Gesellschaft für deutsche Sprache (GfdS)

The provided news articles focus solely on the Christian holiday of Maundy Thursday (Gründonnerstag) and do not contain any information about the Gesellschaft für deutsche Sprache (GfdS). Therefore, it's impossible to provide a summary about the GfdS based on these articles. The articles discuss the religious significance of Maundy Thursday, the Last Supper, the etymology of the holiday's name, and regional dance bans. Without any mention of the GfdS, I cannot determine why they would be newsworthy in this context, any recent events or developments related to them, or their current relevance or significance.