Level walls now follow width of the level instead of scene width

Very crude and buggy
Needs to be much better

Added:
- some ideas to test display of hud elements
Fixed:
- HUD now follows the scene when it moves

Added
- some placeholder graphics for HUD elements
- just to demonstrate how HUD may be implemented with drawForeground of
ActionScene

Added
- box2d source codes to be added in project when there is no longer cba
- some base ideas to display classes
Improved
- level loading : layer with property "solid" is now loaded tile by
tile, this allows adding static rigid bodies to these items for
collision detection

Added drawBackground and drawForeground
- background for handling parallax scrolling during levels
- foreground for HUD implementation

Changed MenuScene to use buttons based on new AnimatingUiElement
- buttons now have scale animation allowing them to be a bit more
"lively"
Added hero_concept as png ":D"

Improved level loading
- added better first test level
- mapLoader now loads all data layers from level files
- TODO: further improve loader so it can read layer depths too
- added unloadMap() to release resources used by levels

Renamed some files according the project name
Added base directory structure for resources
Changed more fitting parallax scrolled background to menus
- added 3 new layers as resources
Changed more cheerful buttons to menus
Added base classes to build HUD later on
Added one new test level that is size of 800*480 with tilesize of 32*32

Added some stuff for project base
- tiled sources
- few Qt based classes for gfx