Started Level-editor branch

All changes done 13-11 by Jelle and Tom have been added here.
Implemented Cursor, added editor class
Added response to heads up menu
Implemented first working version of the editor

Added resize options to buttons 1 and 2, Save option to button 3 and
Load option to button 4. Maze objects can be changed by clicking on
them.
Changed to MazeEditor and MainGame package

Added start point in maze and removed player and editing variables.
Added GraphicsObject klasse en drawModes

al het werk van 19-11
Added rotation and fixed save/read

aanpassingen 20-11
laatste verbeteringen

pijl op de startpositie, orientatie aangepast, file openen voor editing
= false.
very last changes

StartArrow is now a Graphics Object
Merge complete