Minimap, hotkeys and lot of other changes

* Begin working on a new layout system for UIMinimap and later UIMap,
this new layout system allows to add widgets to the minimap
* Add option to disable motd
* Rework hotkey binding
* Lots of fixes in hotkeys manager
* Add fullmap view using Ctrl+Shift+M
* Prevent some crashs in ThingType draw
* Add function to load minimap from PNG files
* Fixes in minimap saving
* Fixes in Tile::isClickable
* Add UIMapAnchorLayout, new layout for maps
* Fix freezes in win32 when pressing alt key

modules/client_background/background.lua

@@ -1,18 +1,19 @@
 -- private variables
 local background
+local clientVersionLabel
 
 -- public functions
 function init()
   background = g_ui.displayUI('background')
   background:lower()
 
-  local clientVersionLabel = background:getChildById('clientVersionLabel')
+  clientVersionLabel = background:getChildById('clientVersionLabel')
   clientVersionLabel:setText(g_app.getName() .. ' ' .. g_app.getVersion() .. '\n' ..
                              'Rev  ' .. g_app.getBuildRevision() .. ' ('.. g_app.getBuildCommit() .. ')\n' ..
                              'Built on ' .. g_app.getBuildDate())
 
   if not g_game.isOnline() then
-    g_effects.fadeIn(clientVersionLabel, 1500)
+    addEvent(function() g_effects.fadeIn(clientVersionLabel, 1500) end)
   end
 
   connect(g_game, { onGameStart = hide })
@@ -40,3 +41,7 @@ end
 function hideVersionLabel()
   background:getChildById('clientVersionLabel'):hide()
 end
+
+function setVersionText(text)
+  clientVersionLabel:setText(text)
+end