Fix activity creation on destroy

Signed-off-by: Israel Barreto Sant'Anna <ibsa14@inf.ufpr.br>

app/models/concerns/trackable.rb

@@ -5,7 +5,7 @@ module Trackable
 
   included do
     after_create :new_create_activity
-    after_destroy :new_destroy_activity
+    before_destroy :new_destroy_activity
     after_update :new_update_activity
   end