Save custom mode (#1007)

* first step to save custom game

* localize various settings in custom game

* rename fields to lower cases

* fix many bugs

* fixes #1014

parts/scenes/replays.lua

@@ -52,6 +52,9 @@ local function _playRep(fileName)
         DATA.pumpRecording(rep.data,GAME.rep)
 
         loadGame(rep.mode,true)
+        if rep.private and GAME.curMode.loadPrivate then
+            GAME.curMode.loadPrivate(rep.private)
+        end
         resetGameData('r')
         PLAYERS[1].username=rep.player
         PLAYERS[1]:startStreaming(GAME.rep)