rework ui layouts, now it is more flexible and modular

data/modules/mainmenu/menustate.lua

@@ -4,8 +4,7 @@ function onEnterMenuState()
 end
 
 function onLeaveMenuState()
-    mainMenu:destroy()
-    mainMenu = nil
+
 end
 
 function onApplicationClose()

data/skins/tibiaskin.yml

@@ -34,7 +34,6 @@ panels:
     # the default panel is empty
 
   roundedGridPanel:
-    default size: [117, 171]
     bordered image:
       left border: [0,214,5,32]
       right border: [6,214,5,32]