fix tournament list colspan
start implementing stresser
Merge branch 'master' into ai

* master:
  tweak online player counter
  nl "Nederlands, Vlaams" translation #2644. Author: Anonymous.
  hu "Magyar" translation #2637. Author: Anonymous. Conflicts: 	conf/messages.hu
  cs "česky, čeština" translation #2635. Author: Anonymous.
  pl "polski" translation #2634. Author: Anonymous.
  uk "українська" translation #2633. Author: dimon4eg. Translate Conflicts: 	conf/messages.uk
  update ca translation
  hu "Magyar" translation #2607. Author: Én.
  ca "Català" translation #2588. Author: Joanot-Martorell.
  el "Ελληνικά" translation #2586. Author: Γιάννης Ανθυμίδης / Yannis Anthymidis. s/Challenge to play/Challenge to a game
  pt "Português" translation #2576. Author: Migsan10.
  fix lobby bug for anons
complete Ai stresser
improve AI timeouts configuration
reimplement AI actors
more progress on AI rewrite
Merge branch 'master' into ai

* master:
  zh "中文" translation #2712. Author: BB9z@myopera.com.
  nb "Norsk bokmål" translation #2710. Author: Pastis.
  ro "Română" translation #2709. Author: adiprenne.
  only registered players can write in forum
satisfying AI move and analysis
give more time to stockfish