restore some game functionallity

* i'm gradually restoring game functionality with the new modules design, though still a lot to do
* you can reload all scripts and modules using Ctrl+R shortcut while playing (finally! this is the reason of all this rework)
* a bunch of fixes, but new regression too :P
* fix performance issue that could lead freezes in the client in older machines
* completely new game module with new design
* fix crashs in map render
* remove uigame.cpp (now every game input is via lua)
* enable DEBUG macro by default, with it you are able to view any possible lua leak while running

modules/client_topmenu/topmenu.lua

@@ -30,25 +30,27 @@ end
 
 -- public functions
 function TopMenu.init()
+  connect(g_game, { onGameStart = TopMenu.showGameButtons,
+                    onGameEnd = TopMenu.hideGameButtons })
+
   topMenu = displayUI('topmenu.otui')
+
   leftButtonsPanel = topMenu:getChildById('leftButtonsPanel')
   rightButtonsPanel = topMenu:getChildById('rightButtonsPanel')
   gameButtonsPanel = topMenu:getChildById('gameButtonsPanel')
-
-  connect(g_game, { onGameStart = TopMenu.showGameButtons,
-                    onGameEnd = TopMenu.hideGameButtons })
 end
 
 function TopMenu.terminate()
+  disconnect(g_game, { onGameStart = TopMenu.showGameButtons,
+                       onGameEnd = TopMenu.hideGameButtons })
+
   leftButtonsPanel = nil
   rightButtonsPanel = nil
   gameButtonsPanel = nil
+
   topMenu:destroy()
   topMenu = nil
 
-  disconnect(g_game, { onGameStart = TopMenu.showGameButtons,
-                       onGameEnd = TopMenu.hideGameButtons })
-
   TopMenu = nil
 end