Fixed issue with menu system Planned Tasks

There was a problem that when multiiple groups were part of the attack
set, then the menus for planned tasks were not correctly generated.

Moose Development/Moose/Tasking/CommandCenter.lua

@@ -207,6 +207,7 @@ function COMMANDCENTER:New( CommandCenterPositionable, CommandCenterName )
         local PlayerGroup = EventData.IniGroup -- The GROUP object should be filled!
         Mission:JoinUnit( PlayerUnit, PlayerGroup )
       end
+      self:SetMenu()
     end
   )