* 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
* IMPORTANT: dat/spr should now be placed in /data/things/
* Rename game_tibiafiles to game_things
* Make battle list algorithm much faster
* Split UITabBar into UITabBar and UIMoveableTabBar
* Fix other minor issues
Eduardo Bart