Added new textures for users-marks
Changed internal management of lamps, so that an abstract list of all special-points is used (marks can be added to this list too)
Added new method and datastructure to GameFieldModel.java, so that from now on this class can be asked if a cell is lighted or not
Added marks to GUI
Implemanted save-game for marks
Changed pic
Removed unneccessary GameFieldController and added its functionality to PuzzleController (needs to be done because of future toggle-button for lamps/marks mode)
Fixed bug of placed lamp when scrollingin the same cell