OpenRA/OpenRA — pull request #2818 by Mailaender (2013-03-22 17:35:37+00:00)
Title: Bring the Diplomacy menu back to life...

..., but
- rename LockTeams to FragileAlliances to avoid confusion
- only allow it in Free-For-All, not Team games or Missions
- grey out non-functional buttons and disabled checkboxes