Use websockets on stats page to determine which match to stat.

app/models/mat.rb

@@ -184,6 +184,7 @@ class Mat < ApplicationRecord
 
 	def clear_queue!
 		update!(queue1: nil, queue2: nil, queue3: nil, queue4: nil)
+		broadcast_current_match
 	end
 
 	def unfinished_matches

app/models/tournament.rb

@@ -97,6 +97,7 @@ class Tournament < ApplicationRecord
 
 	def destroy_all_matches
 		matches.destroy_all
+		mats.each(&:clear_queue!)
 	end
 
 	def matches_by_round(round)